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  1. #101
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    the alarm plugs directly into the charging connector on this previously mentioned ebay battery.

    Quote Originally Posted by Cat-man-do View Post
    An audible alarm would be sweet provided you can turn it off once it goes off. This alarm seems to be set for low voltage ( 3.3volts ) That means it has to be wired directly to the cells. Not something the novice is going to have an easy time doing. Personally I'd rather deal with blinking warning lights.

  2. #102
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    Quote Originally Posted by patski View Post
    the alarm plugs directly into the charging connector on this previously mentioned ebay battery.
    According to the links you supplied the battery has a balance lead that has a "3" connection plug. The alarm looks to have "4" leads. Is there something I'm missing?

  3. #103
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    Quote Originally Posted by Cat-man-do View Post
    According to the links you supplied the battery has a balance lead that has a "3" connection plug. The alarm looks to have "4" leads. Is there something I'm missing?
    Yep, you're missing that these alarms are designed to be used with 2-3 cell lipo batteries, so one pin is unused if you're only using 2 cell.

  4. #104
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    Quote Originally Posted by DRILLINDK View Post
    I'm a newbie to lights. I don't own one yet, but I'm in the market for one. I'm considering some of the Xeccon lights....any suggestions?
    Anyone with our dental skills and tools should be able to DIY a light as good or better than anything you can buy. (I posted a simple step-by-step on the DIY forum).

  5. #105
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    Quote Originally Posted by Ofroad'bent View Post
    Anyone with our dental skills and tools should be able to DIY a light as good or better than anything you can buy. (I posted a simple step-by-step on the DIY forum).
    Nothing wrong with DIY ( although all of this is off topic ), Not everyone wants to fabricate their own light. A few years back when LED lighting was all new, DIY was the "IN Thing" because bike lights were more expensive ( and there were less to choose from). Then along came the MagicShine 808. As cheap as they were ( quality and price ) they still caught the attention ( and pocketbooks ) of a lot of people. Even the seasoned DIY'ers at the time had to concede that they couldn't make a light for that kind of money.

    Things have changed a lot since those days. Now the Chinese lamps are even more inexpensive. For anywhere between $30-$50 you can get a decent light head ( if you choose wisely ) that will work and work good enough to do serious mountain biking. Your DIY light will be better ( depending on your design and skill level ) but no way will it be easier than just plunking down a handful of bills for a Chinese made lamp. Hard to justify the effort to do a DIY unless you really just want the satisfaction of doing it yourself. Nothing wrong with that if it's your thing.

  6. #106
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    Quote Originally Posted by Cat-man-do View Post
    Nothing wrong with DIY ( although all of this is off topic ), Not everyone wants to fabricate their own light. A few years back when LED lighting was all new, DIY was the "IN Thing" because bike lights were more expensive ( and there were less to choose from). Then along came the MagicShine 808. As cheap as they were ( quality and price ) they still caught the attention ( and pocketbooks ) of a lot of people. Even the seasoned DIY'ers at the time had to concede that they couldn't make a light for that kind of money.

    Things have changed a lot since those days. Now the Chinese lamps are even more inexpensive. For anywhere between $30-$50 you can get a decent light head ( if you choose wisely ) that will work and work good enough to do serious mountain biking. Your DIY light will be better ( depending on your design and skill level ) but no way will it be easier than just plunking down a handful of bills for a Chinese made lamp. Hard to justify the effort to do a DIY unless you really just want the satisfaction of doing it yourself. Nothing wrong with that if it's your thing.
    Yeah, sorry, off topic a bit. I did show how to make up a battery pack too.

    The DIY build I showed is smaller and lighter than the Chinese ones, and the driver is more efficient. The housing is more of a kit than a home-brew.

    The L-flex driver, or the newer less expensive Mobydrv, have a lot more flexibility than the ones in the Chinese lights. I like 5 even levels of brightness, with the ability to go up or down a level easily as opposed to the Chinese clicky on-off type. The low-voltage electronic switching should be more reliable. Also able to use the very latest Cree XML-2 with the nicest compact optic out there, for more output and a choice of beams.

    DIY solder connections seem more solid than the Magicshine types too.

    Here's the thread
    Easy2LED housing with external switch build

    It will cost a bit more, and take more time, but it's a better, smaller light, with excellent battery cells.
    OK, no more hijack.

  7. #107
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    Quote Originally Posted by Cat-man-do View Post
    Hard to justify the effort to do a DIY unless you really just want the satisfaction of doing it yourself. Nothing wrong with that if it's your thing.
    I'll further derail this thread, apologies in advance. More than the satisfaction of doing it yourself for me, is getting exactly what I want. Just like many cyclists will spec their own build or swap parts around on a standard build we all have some particular preference.

  8. #108
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    Cat man do, sorry off topic. I purchased two magicshines (single XML) from GeoManGear right before they bellied up. I then purchased a clone from Amazon. I can't tell the difference, it looks Identical, so I assume I got a junk battery from Amazon. So far, no complaints. The price difference was so great I have to assume it's the battery. Long story...I just wanted to thank you for doing what you do and the review(s) for Leonard.

  9. #109
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    So I just bought two of these batteries and now know it does not have a pcb. I wanted to add a pcb to it but I can't find anything on how to choose a pcb. Does any one know which pcb I should order for this battery pack or better yet how to choose a pcb for battery pack. This is the light I'm going to run them with. SolarStorm 5000 Lumen 2x CREE XM-L U2 LED Bicycle Bike HeadLight found on ebay. I also ordered two lights, one for me and one for a friend. Sorry if this is off topic.

    Thanks,
    Megan

  10. #110
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    Heres the battery pack I ordered. USA 8 4V 7 4V Battery Pack for CREE XML T6 SSC P7 12400mAh Capacity Guaranteed | eBay. It didn't show up in my reply.

  11. #111
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    Quote Originally Posted by kittyloves2bite View Post
    So I just bought two of these batteries and now know it does not have a pcb. I wanted to add a pcb to it but I can't find anything on how to choose a pcb. Does any one know which pcb I should order for this battery pack or better yet how to choose a pcb for battery pack. This is the light I'm going to run them with. SolarStorm 5000 Lumen 2x CREE XM-L U2 LED Bicycle Bike HeadLight found on ebay. I also ordered two lights, one for me and one for a friend. Sorry if this is off topic.

    Thanks,
    Megan
    You could put one of these in line, Megan.
    Protection Circuit LI ION LI PO Battery Pack 7 4V 8 4V | eBay

  12. #112
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    Quote Originally Posted by Ofroad'bent View Post
    You could put one of these in line, Megan.
    Protection Circuit LI ION LI PO Battery Pack 7 4V 8 4V | eBay
    My suggestion would be to ask the seller of the battery if it's possible to add a PCB to the battery FIRST. Since that battery is already built adding a PCB might require removing the shrink wrap and desoldering some of the wires. This is not something a novice will be comfortable with. Hopefully there would be a schematic drawing included with the PCB to help guide you so you know what wire goes where.

    Then again you need to know just how many cells are being used in the build. I figure the battery might have 8 cells. Maybe that's why there is no PCB.

    Lastly, if this is truly a 12400mAh battery and you are going to use it with a lamp like the Solarstorm X2, chances are you will never come close to using all the battery power in one ride but that's my take on it. Without a PCB the biggest worry would be short circuit protection. I don't remember now if the listing on that battery included a fuse. If not you could certainly add one without too much fuss ( assuming one understands basic electronic wiring ).

  13. #113
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    Also protect the pack. Those LiPos are fragile and potentially explosive.

  14. #114
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    Quote Originally Posted by Cat-man-do View Post
    My suggestion would be to ask the seller of the battery if it's possible to add a PCB to the battery FIRST. Since that battery is already built adding a PCB might require removing the shrink wrap and desoldering some of the wires. This is not something a novice will be comfortable with. Hopefully there would be a schematic drawing included with the PCB to help guide you so you know what wire goes where.

    Then again you need to know just how many cells are being used in the build. I figure the battery might have 8 cells. Maybe that's why there is no PCB.

    Lastly, if this is truly a 12400mAh battery and you are going to use it with a lamp like the Solarstorm X2, chances are you will never come close to using all the battery power in one ride but that's my take on it. Without a PCB the biggest worry would be short circuit protection. I don't remember now if the listing on that battery included a fuse. If not you could certainly add one without too much fuss ( assuming one understands basic electronic wiring ).
    I already ordered them or I would have done that... =/ I've done soldering and heat shrinking before. So that is no big deal to me. Here is what the sell says about the battery pack.

    You are buying (1) one 8.4 volt, 91.8Wh, 12400mAh battery pack for the Cree XML-T6 LED or SSC P7 headlight. It can also be used with any device that runs on 7.4 to 8.4V voltage.

    This is a very large pack capable of providing 30W continuously. It can run a 10W light for more than 9 hours or a 30W light for more than 3 hours. I build the battery pack myself, in my spare time as a hobby. Shipping from Houston, Texas via USPS Priority Mail so it will arrive quickly in as little as 3 days.

    Specifications:
    Maximum charge voltage = 8.4V, 4.2V per cell
    Minimum discharge voltage (cutoff) = 6.0V, 3.0V per cell
    Guaranteed capacity = 12400mAh
    Energy content = 91.8Wh (7.4V x 12.4Ah)
    Continuous discharge rate = 0.33C or 30W (limited by the wire size. I can use thicker wires but it won't be as flexible.)
    Pack weight: 18 oz total including connectors and shrink tubing
    Pack dimension: 96 x 70 x 32mm [3.8 x 2.8 x 1.26in]
    Main connector for charging and discharging = 5.5 x 2.1mm female power jack, center pin is positive (+), housing is negative (-)
    Balance connector = JST 3-pin

    Details: Unlike other 8.4V pack, this battery pack is built with a 2s JST connector. This 3-pin connector lets you manage each of the two cell groups independently. The 3-pin connector can be used with any RC balance charger to ensure exact balance between the cells. Pack capacity and longevity are maximized when the cells are in balance.

    Construction: This battery pack is built with four (4) HPPN787196 high quality cells manufactured in S Korea or in Japan. The configuration is 2s2p (2 groups of cells in series, 2 cells per group). Each cell is fully tested and capacity is matched before assembly. The battery pack is tested again after assembly.

    Pack capacity test:
    Balance charge the pack to 8.4V (4.2V per cell)
    Discharge at 4.1A (0.33C) until 6.0V (3.0V per cell)
    Any pack that has less than 12400mAh is discarded.

    12400mAh or 91.8Wh is the minimum capacity of the pack.

    The pack will be shipped at the proper storage voltage, 7.6V to 7.8V. It needs to be charged up to 8.4V before use.

    The Coca Cola can in the pictures is for size perspective/comparison only. It's not included in this purchase.

    Thanks for looking.

    And just so everyone is clear the battery Im talking about is the one in post #85 Page 4... I don't think I can add links yet or I would.

    The fuse sounds like a good idea but I want the pcb to cut the battery off so I don't discharge it to much. I ordered one of the Imax bc ac chargers to charge the battery.

  15. #115
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    Quote Originally Posted by Ofroad'bent View Post
    Also protect the pack. Those LiPos are fragile and potentially explosive.
    Yeah the explosive part I really don't care for lol. The pcb you said to use will work with that light? I don't know enough to know if the pcb and the led driver need to match at all for it to work. I also don't know what driver the solarstorm has... i have to wait till the light gets here to rip it apart.

  16. #116
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    4 - cell 18650 battery/ battery holder

    I thought this was a great find so credit to Kir and to HakanC for pointing out this very interesting battery / serviceable battery holder.

    Oh how I wish these were sold years ago. Right now I have all the batteries I could want so no point in me buying one. Not sure if the plug is MS compatible but likely it is. If I hear differently I'll let you know. Someone be kind enough to give HakanC another greenie ( since they won't let me give him another and he only has one..). Very nice that he pointed out that the battery/holder is sold separately. To whom it may be concerned, these will sell out fast. If you want one buy NOW.

  17. #117
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    Cat those Kaidomain battery packs come with built in PCB, is it ok to use PROTECTED 18650 batteries, or must I rather use unprotected cells? (I have some protected 18560 Panasonics off intl-outdoor.com)
    I would like to charge the pack with my old Magicshine charger or possibly buy a generic Chinese charger.
    Thanks!
    Goatman
    - It's not the destination that counts but how you get there -

  18. #118
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    Quote Originally Posted by goatman View Post
    Cat those Kaidomain battery packs come with built in PCB, is it ok to use PROTECTED 18650 batteries, or must I rather use unprotected cells? (I have some protected 18560 Panasonics off intl-outdoor.com)
    I would like to charge the pack with my old Magicshine charger or possibly buy a generic Chinese charger.
    Thanks!
    If the holder uses a circuit ( PCB ) to protect the batteries "unprotected batteries" would be the better way to go. Not a big issue but I'd go with unprotected cells.

    Since it was mentioned that the holder is not designed to be taken apart constantly, I would think it a good idea to charge the batteries using a standard 7.4volt 4-cell charger. While it is nice to be able to take the cells out and either charge them separately or switch them with others, *I found that changing out cells on a 4-cell holder to be quite tedious. ( * Note, I own a 4-cell holder just not this particular one ) If you can keep the cells inside the housing and charge them without taking them out that is the easier way to go.

    User beware though, cell holders can be problematic. Springs and contacts can lose their tension over time. This could cause unexpected power outages. Every once in a while it will necessary to make adjustments and to deoxidize the contacts.

  19. #119
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    CAT:"Since it was mentioned that the holder is not designed to be taken apart constantly, I would think it a good idea to charge the batteries using a standard 7.4volt 4-cell charger."
    Is there a specific generic Chinese charger that you would recommend? I don't trust my old Magicshine charger, currently made my own 4 protected 18650 cell battery pack that requires me to remove the cells and charge them separately from the pack. This can get a bit tedious, so would prefer an external 8.4volt charger.
    Last edited by goatman; 06-09-2013 at 02:04 AM. Reason: spelling
    Goatman
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  20. #120
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    Quote Originally Posted by goatman View Post
    CAT:"Since it was mentioned that the holder is not designed to be taken apart constantly, I would think it a good idea to charge the batteries using a standard 7.4volt 4-cell charger."
    Is there a specific generic Chinese charger that you would recommend? I don't trust my old Magicshine charger, currently made my own 4 protected 18650 cell battery pack that requires me to remove the cells and charge them separately from the pack. This can get a bit tedious, so would prefer an external 8.4volt charger.
    Oddly enough the only chargers I've ever had a problem with are the one's designed to charge single 18650 cells. I've had two of those go up. Never had a problem with any multi-cell 7.4 volt charger. If you live in the USA you could just order one from ActionLED and be done with it. The cheaper generic Chinese chargers I'd stay away. from if I were you. Nothing wrong with the MagicShine chargers as long as it is one of the ones sold with the newer models. If you have one of the original models then yeah, I wouldn't trust that either.

    ( edit * Goatman, If you still live in South Africa you could order a charger from Xeccon Revolution. Just make sure you get one with the right wall plug. )

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    I second what Cat man do said!!!

  22. #122
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    First: Ordered the 4400Ah 4 cell battery and 1a charger for Xeccon, and got a message they could not complete order and were sending a refund, without specifying any reason why. Both items are indicated as in stock.

    EDIT: Just got notice the problem is shipping batteries by air ( I live in HI).

    Are the magicshine batts/chargers at Action of the same quality/safety?

    Second: Would the 2a charger be appropriate or even better for such batteries? Advantages, disadvantages?

    Third: Below is a steel case for a circular saw I'm thinking about using for indoor charging. Any thoughts on that, and maybe a possible need for venting to relieve possible compression?



    The Battery Thread: 2013-photoiqnu.jpg

  23. #123
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    Quote Originally Posted by pigmode View Post
    First: Ordered the 4400Ah 4 cell battery and 1a charger for Xeccon, and got a message they could not complete order and were sending a refund, without specifying any reason why. Both items are indicated as in stock.

    EDIT: Just got notice the problem is shipping batteries by air ( I live in HI).

    Are the magicshine batts/chargers at Action of the same quality/safety?

    Second: Would the 2a charger be appropriate or even better for such batteries? Advantages, disadvantages?
    The air courier for Xeccon probably doesn't ship directly to Hawaii. Likely there is no air relay from continental USA to Hawaii. Anything ordered from ActionLED should be fine.

    About the charger; would need to see the link. If this is a charger designed to charge a 7.4 volt battery then I'm assuming that the current splits in the parallel battery configuration and each cell sees 1A. This is the maximum recommended charging current for 18650 cells and should be fine. If you want fast charging, this should work.

  24. #124
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    Quote Originally Posted by pigmode View Post
    First: Ordered the 4400Ah 4 cell battery and 1a charger for Xeccon, and got a message they could not complete order and were sending a refund, without specifying any reason why. Both items are indicated as in stock.

    EDIT: Just got notice the problem is shipping batteries by air ( I live in HI).

    Are the magicshine batts/chargers at Action of the same quality/safety?

    Second: Would the 2a charger be appropriate or even better for such batteries? Advantages, disadvantages?

    Third: Below is a steel case for a circular saw I'm thinking about using for indoor charging. Any thoughts on that, and maybe a possible need for venting to relieve possible compression?

    Click image for larger version. 

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    Hi Pigmode, thanks for the updated clarification. We did reply you with an explanation within minutes of the order. Sometimes our updates end up in the JunkMail folder. We communicate and talk a lot. I don't think anybody doubts that. Shipping Lithium batteries by air has been a real challenge since Jan this year. There were problems and restrictions before but it suddenly became a real problem with IATA after the fires in the Boeing 787 Dreamliners. Since then the requirements goal post has been shifting so erratically that now most carriers out of China like DHL, FedEX, UPS will send the items back the moment they detect Li-ion inside. Things are going to get worse, not better.

    Currently the problems are sending from China, and worse, if it's heading to the USA. To other countries it's easier, for now. If it's shipping just a battery pack by itself, forget it. Nobody will legitimately ship it for you. It used to be ok if sent in a set, now that's out too. It can only be sent if it's installed in the equipment. Lets see when this changes.

    We were able to send items ordered lately by mtbr members in the US mainland because we've send the items without batteries and raided Bloomington IN's battery stock to power those lights. I am sure at least one customer will acknowledge this on mtbr soon. USPS is getting very restrictive too so I don't necessarily agree it will be easier for a US seller to ship to HI by air. We have plans to deal with this enduring problem soon.


    2A chargers charge twice as fast but 1A is just a little bit better for the batteries. A slow TLC charge is good for Lithium batteries. Having said that, we supply 2A in AU. Riders have no patience with overnight charging. The aim is a full charge in about 3-4 hours for a 6600mAh pack.

    Coincidental but your charging enclosure looks very much like the box used to house the Lithiums in the Dreamliners. An old paint can will suffice if I was to suggest one. Personally I don't use them. I just charge them under supervision. Charging Li-ion is generally safe but bear in mind this is also dependent on the charger and protection circuit working 100%. It may not have anything to do with the batteries persay. I think the Dreamliner demonstrates no matter how much state-of-the-art tech the plane has, the whole thing got undone by possibly small faulty circuit boards.
    Leonard - All things Xeccon + Beyond
    mtbRevolution.com

  25. #125
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    New Samsung and Sanyo 18650's : Fasttech super deals

    In keeping up to date on the battery world I noticed yesterday that Fasttech is quickly drawing a lot of attention from people in the portable LED lighting world. Fasttech is offering lots of things at really decent prices.

    These Samsung protected 3000mAh cells are just an example. A month ago I paid $11 for "one" Panasonic unprotected 3100mAh cell ( plus shipping ). Fasttech has these Samsungs for $13.31 FOR TWO ( no shipping cost ). That's too good a deal to ignore. They also sell a lot of other 18650 cells made by both Samsung and Sanyo. These are not knock-offs these are the real deal, at least that is what I'm hearing from different forums on the net.

    Lots of goodies being sold over at Fasttech AND AT DECENT PRICES. If you buy 18650's from them just be sure you don't order the Samsung cells that have the 4.35 peak voltage upgrade UNLESS you have the special charger to charge the cells. Yes, Fasttech sells those too. Matter of fact I may decide to try those out myself. The charger cost about $8 so not a big deal. For the time being though I'll likely stick to cells that peak out at 4.2 volts. If you're into torches or 18650 cell holders, Fasttech is the new player on the block for LED Lighting/supplies.

    I have a feeling this might be one of the reasons why Xeccon has decided not to use Panasonic cells.. Hopefuly this type of competition in the battery world will help lower prices on the Panasonic's as well.

  26. #126
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    The Battery Thread: 2013

    Thanks for the update, Cat! Just bought a flashlight to use with my recycled laptop cells, but if I did not have these, I would buy those 2 for sure. Also, buying a nice solid case (saw it somewhere, cant remember where...maybe kd?) to store 4 of those 18650 cells is a great option for me. Cheap, good cell holder with very good cells and plenty of runtime on a not so bulky battery holder.

  27. #127
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    Warning!

    Quote Originally Posted by Cat-man-do View Post
    I thought this was a great find so credit to Kir and to HakanC for pointing out this very interesting battery / serviceable battery holder.

    Oh how I wish these were sold years ago. Right now I have all the batteries I could want so no point in me buying one. Not sure if the plug is MS compatible but likely it is. If I hear differently I'll let you know. Someone be kind enough to give HakanC another greenie ( since they won't let me give him another and he only has one..). Very nice that he pointed out that the battery/holder is sold separately. To whom it may be concerned, these will sell out fast. If you want one buy NOW.
    I decided to try this - the page shows that it will ship in 1-3 days but my order confirmation shows that it is back ordered.

    BEWARE!

  28. #128
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    The Battery Thread: 2013

    That was the holder I was referring to in my last post lol. Thanks for reminding me - it is saved now, in case I ever need one.

  29. #129
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    Quote Originally Posted by PedroDank View Post
    That was the holder I was referring to in my last post lol. Thanks for reminding me - it is saved now, in case I ever need one.
    Like I said before, stuff like this sells fast. You might have to wait a couple months to get it but it will come. I just hope it's worth the wait.

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    Quote Originally Posted by Cat-man-do View Post
    Like I said before, stuff like this sells fast. You might have to wait a couple months to get it but it will come. I just hope it's worth the wait.
    So it seems, but I need a battery now! What would you order to power a 1st gen Magic Shine 816 (the bar mounted triple LED so-said 1400 lumen)?

  31. #131
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    Quote Originally Posted by Biobanker View Post
    So it seems, but I need a battery now! What would you order to power a 1st gen Magic Shine 816 (the bar mounted triple LED so-said 1400 lumen)?
    If urgency is the main issue Action LED has a good reputation for getting stuff out fast to people in North America. This is a good battery, quality cells, the only other thing to worry about is duty fees to Canada.

  32. #132
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    My backordered battery with holder (http://kaidomain.com/product/details.S021564) has apparently shipped.

    I will let you all know 1) if it arrives and 2) how it works when it does. For $17, cant hurt to give it a go I figure!

  33. #133
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    Ok guys,
    I will try to do the job and post a review on this hyped battery holder from Kaidomain: http://www.kaidomain.com/product/details.S021564

    First some photos to get a feeling....
    The Battery Thread: 2013-dsc04472.jpgThe Battery Thread: 2013-dsc04473.jpgThe Battery Thread: 2013-dsc04471.jpgThe Battery Thread: 2013-dsc04470.jpg

    Ok, now the facts:
    1. Plug is not Magicshine compatible!
    2. 18650 cells inside are crap - whole pack got about 2500mAh (instead the mentioned 4800mAh!) - I was expecting this, so not a problem from this side!
    3. discharge cutoff measured at 4,8V
    4. I was not able to test the overcharge cutoff - tested until 8,8V then aborted the test
    5. wouldn't say it is dive proof but should withstand some rain
    6. screws shouldn't be opend too often - screw holes are not the best

    Would say it is sturdy battery holder with some cons - but it should do the trick for us DIY'folks!

    PS: mayby the overcharge protection test can be done from someone who has hopefully more luck......
    ..just ride...

  34. #134
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    My battery also arrived.

    How are you handling the plug? I want to connect it to Magicshines...and although I can get power to the light, it is not the correct plug.

    Not sure how I would check the overcharge protection. That makes me worried!

  35. #135
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    cut the cable and solder a magicshine compatible onto it!
    Other possibility I can think of is to totally pull out the existing cable from the battery compartment and connect a magicshine cable by soldering it to the green pcb!

    anyone tested the overcharge protection yet?
    ..just ride...

  36. #136
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    Received the same battery pack from Kaidomain, tried to charge it on my Imax.
    Charging went to 0.4A current and then protection pcb in battery pack activated ("connection break" on display). Thats usually a sign of unbalanced battery.
    Quickly opened it, measured voltage on cells...one pair was at 4.28V, another at 3.98V. Thats the overcharge protection at 4.3v and it works on my battery pack.
    So basically one pair has way lower capacity than another and gets overcharged. If you try to use it like this - you'll quickly kill overcharged pair and since second pair is not getting charged to maximum capacity you'll get ~2000-2500mAh total capacity. If only these packs came with balance lead...

    Gotta measure capacity of each cell and post the result here in a few days, but yeah - consider this a battery holder, not a battery pack. It really needs a quality cells replacement.

  37. #137
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    Quote Originally Posted by Kir View Post
    Received the same battery pack from Kaidomain, tried to charge it on my Imax.
    Charging went to 0.4A current and then protection pcb in battery pack activated ("connection break" on display). Thats usually a sign of unbalanced battery.
    Quickly opened it, measured voltage on cells...one pair was at 4.28V, another at 3.98V. Thats the overcharge protection at 4.3v and it works on my battery pack.
    So basically one pair has way lower capacity than another and gets overcharged. If you try to use it like this - you'll quickly kill overcharged pair and since second pair is not getting charged to maximum capacity you'll get ~2000-2500mAh total capacity. If only these packs came with balance lead...

    Gotta measure capacity of each cell and post the result here in a few days, but yeah - consider this a battery holder, not a battery pack. It really needs a quality cells replacement.
    Kir,

    If you could post some possible solutions and or some suggested replacement cells, it would be appreciated. Thanks.

  38. #138

  39. #139
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    Hey Kir great prices. Is FastTech reliable? I was looking through their site for a good 2S2P battery holder with good and reliable overcharge and discharge protection. Anybody have any ideas for where to get one.

  40. #140
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    Very reliable, its one of the best sites with electronic components. You may find these batteries a bit cheaper on aliexpress, but fasttech offers more choices and guaranteed quality. Also use "BLF" or "CPF" coupon at checkout for small discount
    $6.15 2S2P 7.4V 18650 Holder with Battery Build-in PCM Protection Circuit Module at FastTech - Worldwide Free Shipping - holder.
    $4.15 2S1P 2*18650 7.4V Holder Case Battery Li-Ion PCM Protection Circuit Module - max. battery length 67mm at FastTech - Worldwide Free Shipping this one may also work, i use protection PCB from them for building my battery packs.

  41. #141
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    Yea Fasttech has proofed itself as a reliable seller!

    Hey Kir, these protection pcb's from the holders - how reliable are they?
    Heard somewhere that they die after some time or just stopped working?
    Considering to use this holders more often! (have already some on my desk...)
    But if the pcb is known to be not that reliable it doesn't make sense...
    ..just ride...

  42. #142
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    But under the specs it says

    "Over charge detection voltage 4.25V0.025V"

    that doesn't seem like it would work for a 7.4 volt setup. Does it detect charging on individual cells??

  43. #143
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    They work fine for me, haven't had any of them die yet.

    And yes, of course they detect voltage on every cell in series - thats the point of protection pcb. Even chinese batteries have same pcb in them with 3 wires like this:
    http://i.imgur.com/BeotWhX.jpg
    Wire on the left is used to detect voltage on each pair of cells.

  44. #144
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    The cheap battery pack starts to look a little expensive when you factor in new cells, pcb and lead - you end up paying $17.40 for the aluminium box.

    I am thinking I might just modify one of these 1pc 18650 Battery Case 2 x Parallel Connection DIY Case | eBay to be 2s1p, add a pcb, some 3400 Panasonics and a magicshine lead & you are good to go

  45. #145
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    New pcb? New lead? This battery pack already had protection pcb built-in. And of course it has power lead, you may add the balance lead though - but it cost 50 cents or so.

  46. #146
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    Quote Originally Posted by find_bruce View Post
    The cheap battery pack starts to look a little expensive when you factor in new cells, pcb and lead - you end up paying $17.40 for the aluminium box.

    I am thinking I might just modify one of these 1pc 18650 Battery Case 2 x Parallel Connection DIY Case | eBay to be 2s1p, add a pcb, some 3400 Panasonics and a magicshine lead & you are good to go
    Look Bruce, you don't want to do that. Makes no sense to buy the best batteries available and then slap them into a piece of plastic junk. You'd be better off buying the cell holders from Fasttech or BatterySpace. Personally I don't like the 4 cell flat packs. I'd buy two of the 2-cell series packs, glue them together to make a 4-square and then wire them in parallel using a MagicShine type connector. Secondly you have to add a strap to keep the cells from falling out. Then just buy a cheap battery bag from almost anywhere.

    Like I said before, ( having used a cell holder before ), it seems like a good idea at first because you can buy 18650 cells separately at really decent prices. The problem is that you will really get tired of removing the cells if you want to charge them separately. You can try charging them like other ( soldered ) packs but don't be surprised if that doesn't work so great. Since the cells in holders are connected only by friction there can be slight voltage drops at the contact points if the cells are not making really good contact with the connectors. This could throw off the balancing action of the PCB. This is why if you use holders it is better to charge the cells separately. After a while it will become a PITA. So much easier to just plug something in. Then again maybe I'm just lazy.

    Anyway, you won't really see a price advantage until you start to buy your second set of batteries. Of course that's only if you continue to use the holder.

  47. #147
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    I'll second Cat's remarks. My experience with battery holders using coil springs, while limited, was poor. The spring allows the battery to bounce off the fixed contact and break the circuit. Depending on your light that makes it turn off or switch modes or maybe just flicker. If you want to use holders get the ones available through Digikey. They have a formed springy sheetmetal contact on each end of the cell. I use 3 packs made with them and never had a problem. More money than the ebay ones, but I am certain you'll be happier with the performance.

  48. #148
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    A few quick points

    I agree it is preferable to solder a pack rather than using springs - I was referring to the kaidoman box above which also uses springs.

    I would prefer to use 2 quality cells to get 3400 mAh than 4 crappy ones to get 4400 mAh. YMMV

    CatMan wiring 2 series holders together is the wrong way round - much better to get 2 parallel holders and wire them in series - for the reasons touched on in this thread

    Kir the reason for changing the cable is that the plug is different from the typical magicshine plug.

    Personally I would not be happy with a PCB like that tested by Whitedog1 & failed to recognise overcharge at 8.8v YMMV

  49. #149
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    Cut off 0.5cm of extra rubber from plug and it becomes macigshine compatible. All these lights use 5.5x2.1mm connectors, just the shape is a bit different.
    My battery charger is very reliable so i don't care about overcharge protection (which was actually working on my battery pack).

  50. #150
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    Quote Originally Posted by Kir View Post
    Received the same battery pack from Kaidomain, tried to charge it on my Imax.
    Charging went to 0.4A current and then protection pcb in battery pack activated ("connection break" on display). Thats usually a sign of unbalanced battery.
    Quickly opened it, measured voltage on cells...one pair was at 4.28V, another at 3.98V. Thats the overcharge protection at 4.3v and it works on my battery pack.
    after this info and
    Quote Originally Posted by find_bruce View Post
    Personally I would not be happy with a PCB like that tested by Whitedog1 & failed to recognise overcharge at 8.8v YMMV
    i disassambled the battery pack again and manually disbalanced (4,2/3,8v) the cells! Then rebuild the pack and connected it to a magicshine carger.
    And...... it quickly cuts off charging after connecting - so I assume that there is some working overcharge protection!!
    Can not explain why in the other test with my Hobby charger the voltage goes up to 8.8V without shutdown! (maybe because i did the test in NiMh mode....)

    Hey Kir any Info according the capacity measurements?
    Quote Originally Posted by Kir View Post
    Gotta measure capacity of each cell and post the result here in a few days, but yeah - consider this a battery holder, not a battery pack. It really needs a quality cells replacement.
    ..just ride...

  51. #151
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    Measured 2 cells so far, 1100 and 1150mAh at 1A discharge to 3V.
    4 x 18650 Battery Set for Bicycle Light-in Charger from Consumer Electronics on Aliexpress.com - i bought it from ali and they actually specify "2400mAh" capacity, so it was expected
    Still a good holder though, just don't forget to replace the cells.

  52. #152
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    thanks, for the info and the find on aliexpress!!
    ..just ride...

  53. #153
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    I bought the Panasonic 3400mAh batteries off Fasttech and they did NOT fit into the Kaidomain holder....I tried many times and eventually had to reinsulate them as the shrinkwrapped plastic had torn off in places. I also removed any sharp edges on the thread channels of the battery holder. The balancing wire also came off it's soldered end.
    This project has been a failure for me, wish I had known that these expensive batteries would not fit before I bought them....

    Fasttech is certainly a reliable reseller.

    Thanks to Kir for all the useful info posted!!!
    Goatman
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  54. #154
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    The Battery Thread: 2013

    That sucks - thanks for sharing this information. So they came with a larger diameter than typical cells?

  55. #155
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    The cells that were already in this battery holder fitted fine.
    The new Panasonic 3400mAh ones did not fit.
    Goatman
    - It's not the destination that counts but how you get there -

  56. #156
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    NCR18650B have 18.4-18.6mm diameter, so they're just a bit over the spec.
    But they DO fit in kaidomain holder, here is a pic:

    You have to carefully insert them as there is very little space on the sides, but they do fit nicely.
    And you have to use only original panasonic flat top cells! Protected ones will be too long, button-top ones will have second layer of shrink tube and will be too wide to insert into the holder.

  57. #157
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    Good job!

    Thanks for the photo Kir, those are the exact same Panasonic batteries I tried to fit.
    I should have been more careful....
    Agree, must be flat top to fit too.
    Might just order some narrower diameter cheaper 18650's and try again!
    Fasttech does list the diameters of cells and the 3400mAh Panasonic's are the widest.
    Goatman
    - It's not the destination that counts but how you get there -

  58. #158
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    The Battery Thread: 2013

    Thanks for all this very useful information Kir - I am planning to do the same upgrade after I receive my new light and hope to have more luck than goatman.

  59. #159
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    confirmed - NCR18650B do fit nicely! I also have them in the holder!
    ..just ride...

  60. #160
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    Good news Whitedog I think I should have been more careful during the fitting process!
    Have ordered some 2900mAh narrower diameter Panasonics off Fasttech that I will fit instead...
    Goatman
    - It's not the destination that counts but how you get there -

  61. #161
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    Hi
    I am having a few question regarding this yellow aluminum battery holder sold on Aliexpress. When asking the seller about the battery size, the seller told be the batteries cannot be removed? Is it true? Does someone ordered it from this website?
    However it is possible to change the batteries, does 18.4x69mm batteries fit in this holder?

  62. #162
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    Quote Originally Posted by Kir View Post
    NCR18650B have 18.4-18.6mm diameter, so they're just a bit over the spec.
    But they DO fit in kaidomain holder, here is a pic:

    You have to carefully insert them as there is very little space on the sides, but they do fit nicely.
    And you have to use only original panasonic flat top cells! Protected ones will be too long, button-top ones will have second layer of shrink tube and will be too wide to insert into the holder.
    Hi Kir,
    nice combination! I plan a similar setup when i receive my light. Which kind of charger do you use for those pricey batteries?

  63. #163
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    I use Imax B6 for all my li-ion batteries, but you can use any charger like the standart chinese chargers for these lights - usually they work fine.

  64. #164
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    I know this has been asked before but where can I get 18650 Panasonics and feel comfortable they are the real thing.

    Thx

  65. #165
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    Fasttech.com, search for "panasonic 18650"

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    Has anyone tried using only two batteries in this? Making it a 2S1P.
    "By Your Command"

  67. #167
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    Quote Originally Posted by Kir View Post
    I use Imax B6 for all my li-ion batteries, but you can use any charger like the standart chinese chargers for these lights - usually they work fine.
    Thanks for the infos! So there should be no danger of burning, melting or exploding batteries with the standard chinese charger? ;-)

    In a earlier post you mentioned to add a balance lead to this battery pack. Im a totally noob on this topic... how can I make this?

  68. #168
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    Quote Originally Posted by pucked up View Post
    Has anyone tried using only two batteries in this? Making it a 2S1P.
    It will work, but why do you want to do this?

    Quote Originally Posted by tish! View Post
    Thanks for the infos! So there should be no danger of burning, melting or exploding batteries with the standard chinese charger? ;-)
    In a earlier post you mentioned to add a balance lead to this battery pack. Im a totally noob on this topic... how can I make this?
    No, the worst thing that could happed is overcharging of cells if you leave it connected to the charger for a long time - but protection PCB in the battery pack should prevent it. Still you should disconnect it from charger when its finished charging (green led lights up on charger), don't leave it connected.

    Balance lead will look like this (another battery pack with NCR18650Bs that I made for my friend):

    You have to solder it inside the battery pack to the protection pcb and cut a small hole in the plastic to route the wires. I can make a picture that shows where you have to solder the wires, but you'll need some soldering skills for this - points are tiny

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    Balancing charge is not required too often: in my practice, the battery comes out of balance after ~1 - 1.5 year of use. As for the holder mentioned above - I don't see any point drilling it to add balance leads: it it not a battery pack but just a holder, and IMHO it's more logical to periodically charge the cells in common 4-slot (or 2-slot) charger...

  70. #170
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    Quote Originally Posted by Kir View Post
    It will work, but why do you want to do this?
    I have more lights than batteries and sometimes when out on a group ride I would split the batteries up into two's so that new riders can come along. This way it saves me from buying 2S1P holders. I tend to buy only 2S2P holders from fasttech w/PCB which can be used as a 2S1P. Even with only 2 Panasoncis 3400am I can still get over 3hrs run times on high with the lights I've made.
    "By Your Command"

  71. #171
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    Quote Originally Posted by -Archie- View Post
    Balancing charge is not required too often: in my practice, the battery comes out of balance after ~1 - 1.5 year of use. As for the holder mentioned above - I don't see any point drilling it to add balance leads: it it not a battery pack but just a holder, and IMHO it's more logical to periodically charge the cells in common 4-slot (or 2-slot) charger...
    Problem is - this pack is not made for constant opening. Soft aluminium profile and steel screws don't mix very well, threads in central part will be stripped very fast.
    And besides balance lead is very useful on its own. I use it to quickly check remaining battery capacity with this and simular checkers:
    HobbyKing Daily - HobbyKing Cellmeter - YouTube

    And btw here is another very interesting battery case:
    Solarstorm portable water proof 4*18650 battery box rechargeable battery case used for bike light-in Other Batteries from Electrical Equipment & Supplies on Aliexpress.com
    I don't think that it was mentioned on this forum yet. Its pretty simular to Fenix BT20's case, but made for 4 batteries and looks sturdy enough. I ordered 2 of them for testing.

  72. #172
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    Quote Originally Posted by Kir View Post
    Problem is - this pack is not made for constant opening. Soft aluminium profile and steel screws don't mix very well, threads in central part will be stripped very fast.
    Well, that's make sense...

  73. #173
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    No, the worst thing that could happed is overcharging of cells if you leave it connected to the charger for a long time - but protection PCB in the battery pack should prevent it. Still you should disconnect it from charger when its finished charging (green led lights up on charger), don't leave it connected.

    You have to solder it inside the battery pack to the protection pcb and cut a small hole in the plastic to route the wires. I can make a picture that shows where you have to solder the wires, but you'll need some soldering skills for this - points are tiny
    Thanks! For the beginning I'll stay with the original battery holder and always have a look at the green light of the charger ;-)

    BTW: Very nice battery holder to which you refer. Maybe I'll order me one as well...
    Last edited by tish!; 09-18-2013 at 02:09 PM. Reason: wrong quotation

  74. #174
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    Quote Originally Posted by Kir View Post
    And btw here is another very interesting battery case:
    Solarstorm portable water proof 4*18650 battery box rechargeable battery case used for bike light-in Other Batteries from Electrical Equipment & Supplies on Aliexpress.com
    I don't think that it was mentioned on this forum yet. Its pretty simular to Fenix BT20's case, but made for 4 batteries and looks sturdy enough. I ordered 2 of them for testing.
    Nice find Kir!!
    Have some update too - found the alu holders in different colour and cheper Price:
    too bad that all of these alu holders are not magicshine compatible!!
    - High Quality blue color Rechargeable 8.4v 4*18650 4400 mAh battery pack for solarstorm X2 bicycle bike light of battery set-in Rechargeable Batteries from Electrical Equipment & Supplies on Aliexpress.com
    - High Quality Rechargeable 8.4v 4*18650 4400 mAh bicycle light battery pack for solarstorm X2 bike light of battery set-in Rechargeable Batteries from Electrical Equipment & Supplies on Aliexpress.com

    Magicshine compatible:
    - waterproof rechargeable 8.4v 4*18650 5200 mAh battery pack for bicycle liahg bike light,headlamp,headlight of battery set-in Rechargeable Batteries from Electrical Equipment & Supplies on Aliexpress.com
    - waterproof 6400mAh 4*18650 8.4V Rechargeable 18650 Battery Pack for Bicyle Light with Magic protection bag+free shipping-in Rechargeable Batteries from Electrical Equipment & Supplies on Aliexpress.com

    They have a nice claimed capacity - but this should be tested.....

    Kaidomain has the black holder as well now:
    - http://kaidomain.com/product/details.S022419
    ..just ride...

  75. #175
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    Quote Originally Posted by Kir View Post
    ...And btw here is another very interesting battery case:
    Solarstorm portable water proof 4*18650 battery box rechargeable battery case used for bike light-in Other Batteries from Electrical Equipment & Supplies on Aliexpress.com
    I don't think that it was mentioned on this forum yet. Its pretty simular to Fenix BT20's case, but made for 4 batteries and looks sturdy enough. I ordered 2 of them for testing.
    Nice find Kir. I like the look of this one. I'd get one but I'd like to use paypal. Since I'm in no hurry I might have to wait till someone else is doing the selling.

    If anyone out there sees another vendor selling these with the paypal option please post up.
    Last edited by Cat-man-do; 09-19-2013 at 12:44 PM.

  76. #176
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    Quote Originally Posted by Kir View Post
    And btw here is another very interesting battery case:
    Solarstorm portable water proof 4*18650 battery box rechargeable battery case used for bike light-in Other Batteries from Electrical Equipment & Supplies on Aliexpress.com
    I don't think that it was mentioned on this forum yet. Its pretty simular to Fenix BT20's case, but made for 4 batteries and looks sturdy enough. I ordered 2 of them for testing.
    Wow shipping kills this deal for me. $15 to ship? I like the case and willing to try it but will wait until another vendor sells them with better or free shipping.
    "By Your Command"

  77. #177
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    Quote Originally Posted by pucked up View Post
    Wow shipping kills this deal for me. $15 to ship? I like the case and willing to try it but will wait until another vendor sells them with better or free shipping.
    Actually the price isn't bad. The other places just include the shipping with the listed price. If you really want one badly and don't mind dealing with the credit card info I suggest you go for it. Just don't expect to get it real fast.

  78. #178
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    Quote Originally Posted by Cat-man-do View Post
    Actually the price isn't bad. The other places just include the shipping with the listed price. If you really want one badly and don't mind dealing with the credit card info I suggest you go for it. Just don't expect to get it real fast.
    Will this battery holder take the longer protected decent batteries i.e. around 69 mm. I need longer battery life for my ssx2

  79. #179
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    Quote Originally Posted by Scoobylight View Post
    Will this battery holder take the longer protected decent batteries i.e. around 69 mm. I need longer battery life for my ssx2
    Why would you want to use "protected" batteries? They are not designed nor intended to work in this configuration - that is the why they have a different PCB for 2sXp packs.

  80. #180
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    Quote Originally Posted by Scoobylight View Post
    Will this battery holder take the longer protected decent batteries i.e. around 69 mm. I need longer battery life for my ssx2
    the holder has already a pcb istalled to protect the batteries!
    So you should use unprotected 18650 cells - longest runntime you will get with panasonic ncr18650b-3400mAh!
    ..just ride...

  81. #181
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    Quote Originally Posted by Scoobylight View Post
    Will this battery holder take the longer protected decent batteries i.e. around 69 mm. I need longer battery life for my ssx2
    longer batteries don't give you longer runntime
    but newer chemistry or lately released batteries will
    ..just ride...

  82. #182
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    Quote Originally Posted by Kir View Post
    Problem is - this pack is not made for constant opening. Soft aluminium profile and steel screws don't mix very well, threads in central part will be stripped very fast.
    And besides balance lead is very useful on its own. I use it to quickly check remaining battery capacity with this and simular checkers:
    HobbyKing Daily - HobbyKing Cellmeter - YouTube

    And btw here is another very interesting battery case:
    Solarstorm portable water proof 4*18650 battery box rechargeable battery case used for bike light-in Other Batteries from Electrical Equipment & Supplies on Aliexpress.com
    I don't think that it was mentioned on this forum yet. Its pretty simular to Fenix BT20's case, but made for 4 batteries and looks sturdy enough. I ordered 2 of them for testing.
    Kir,

    have you noticed that the case you mentioned has a picture of a triple led Solastorm.... maybe its the standard case that comes with that light.... should be a great one to mod the side leds optics for flood and leave the center one for throw... Dont you think? Similar set up you use with your singfire but ina much smaller form factor.

  83. #183
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    Quote Originally Posted by Kir View Post
    And btw here is another very interesting battery case:
    Solarstorm portable water proof 4*18650 battery box rechargeable battery case used for bike light-in Other Batteries from Electrical Equipment & Supplies on Aliexpress.com
    I don't think that it was mentioned on this forum yet. Its pretty simular to Fenix BT20's case, but made for 4 batteries and looks sturdy enough. I ordered 2 of them for testing.
    Very cool! Has anyone seen a 2-cell version of this (like the Fenix BA4C case that comes with the BT20)? As far as I can tell, no one sells the BT20 case separately.

  84. #184
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    Quote Originally Posted by Lichitisky View Post
    Kir,

    have you noticed that the case you mentioned has a picture of a triple led Solastorm.... maybe its the standard case that comes with that light.... should be a great one to mod the side leds optics for flood and leave the center one for throw... Dont you think? Similar set up you use with your singfire but ina much smaller form factor.
    Yes, its a case for SolarStorm X3. I actually noticed the SSX3 and posted link to it on another forum, then some guys from this forum asked seller to make separate listing for battery case only.
    I ordered 2 cases and will post impressions here when I'll receive them.

    SSX3 could work as flood-throw combo if you'll replace optics in side leds, but imo this is a better choice:
    1Set Cree XML T6+2xCree XPE R2 LED Bicycle Light 4 Mode 1200 Lumens Rechargeable intelligent Power Indicate LED Bike HeadLights-in Bicycle Light from Sports & Entertainment on Aliexpress.com
    Clone of niteye B30, TIR lenses on the sides for floor and reflector in center for throw, nice optional remote control. Expect kinda crappy battery though, but still worth it for $70.
    The only bad thing about it is XP-E leds on the sides, but it should be possible to replace them with XM-L.

  85. #185
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    Quote Originally Posted by Kir View Post
    Yes, its a case for SolarStorm X3. I actually noticed the SSX3 and posted link to it on another forum, then some guys from this forum asked seller to make separate listing for battery case only.
    Is there a link to this? Or is it the same one from Ali Express?
    "By Your Command"

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    Quote Originally Posted by Kir View Post
    Yes, its a case for SolarStorm X3. I actually noticed the SSX3 and posted link to it on another forum, then some guys from this forum asked seller to make separate listing for battery case only.
    I ordered 2 cases and will post impressions here when I'll receive them.

    SSX3 could work as flood-throw combo if you'll replace optics in side leds, but imo this is a better choice:
    1Set Cree XML T6+2xCree XPE R2 LED Bicycle Light 4 Mode 1200 Lumens Rechargeable intelligent Power Indicate LED Bike HeadLights-in Bicycle Light from Sports & Entertainment on Aliexpress.com
    Clone of niteye B30, TIR lenses on the sides for floor and reflector in center for throw, nice optional remote control. Expect kinda crappy battery though, but still worth it for $70.
    The only bad thing about it is XP-E leds on the sides, but it should be possible to replace them with XM-L.
    OMG that looks nice!

    The build quality looks great but, one thing turns me down right away: the leds.

    This lamp uses a not so efficient XML t6 and even worse, 2 XPE R2. Would this bring down the lumens count when compared, for example, with the SSx3 or Nitefire HERO2?

    Another thing is.... the mount. The famous brands that uses this type os mount are known to be great. But the "Chinos" version... not so good.

    Do own or have taken a look at this lamp? Is it good, quality wise? How do you think iT would compare to SSx3 and Nitefire HERO2 regarding to power output and overall quality?

    From what you have seen what is the best, cost efective light for the BARS (not using any headlamp with along with it), with 2, 3 and 4 leds?

    Catman Could answers this last one for me as well?

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    You guys think this would be great battery holder or the USB plug would be a problem? The screw looks solid in this... better than the one we saw in Kaidomain?!?!

    TrustFire 4000mAh 4 x 18650 Battery Power Bank w / USB Output + EUA Plug Power Adapter - Frete Grtis - DealExtreme

  88. #188
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    Quote Originally Posted by Lichitisky View Post
    This lamp uses a not so efficient XML t6 and even worse, 2 XPE R2. Would this bring down the lumens count when compared, for example, with the SSx3 or Nitefire HERO2?

    Another thing is.... the mount. The famous brands that uses this type os mount are known to be great. But the "Chinos" version... not so good.

    Do own or have taken a look at this lamp? Is it good, quality wise? How do you think iT would compare to SSx3 and Nitefire HERO2 regarding to power output and overall quality?
    It uses XPE leds on purpose since this version doesn't have brightness adjustment for leds. So you have 3 modes - center led only, side leds only (low-brightness mode with low current from battery), center + side leds.
    It won't be as bright as SSX3 but you may be able to replace side leds with XML if you need same brightness.
    I don't have it yet. And anyway lets keep the discussion of bike lights in another topics, this one is about batteries

    From what you have seen what is the best, cost efective light for the BARS (not using any headlamp with along with it), with 2, 3 and 4 leds?
    Best OR cost effective? These things are kinda different
    Cost effective is solarstorm x2 since you can get it for $25-35. Best...well for me its Singfire SF-530.

    You guys think this would be great battery holder or the USB plug would be a problem? The screw looks solid in this... better than the one we saw in Kaidomain?!?!
    It won't work with most lights due to 5v output (too low for 8.4v lights and too high for 4.2v lights) Its made for this light only:
    https://www.fasttech.com/products/1446903
    You can probably find a few other chinese lights with usb input, I've seen them on aliexpress - but its still a very unusual battery pack. The whole idea behind it is the ability to recharge your usb gadgets on the ride using its usb port.

  89. #189
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    Quote Originally Posted by Kir View Post
    It uses XPE leds on purpose since this version doesn't have brightness adjustment for leds. So you have 3 modes - center led only, side leds only (low-brightness mode with low current from battery), center + side leds.
    It won't be as bright as SSX3 but you may be able to replace side leds with XML if you need same brightness.
    I don't have it yet. And anyway lets keep the discussion of bike lights in another topics, this one is about batteries


    Best OR cost effective? These things are kinda different
    Cost effective is solarstorm x2 since you can get it for $25-35. Best...well for me its Singfire SF-530.


    It won't work with most lights due to 5v output (too low for 8.4v lights and too high for 4.2v lights) Its made for this light only:
    https://www.fasttech.com/products/1446903
    You can probably find a few other chinese lights with usb input, I've seen them on aliexpress - but its still a very unusual battery pack. The whole idea behind it is the ability to recharge your usb gadgets on the ride using its usb port.
    I think this battery outputs 8.4v from the charging socket and 5v from the usb. If so, it's multi purpose.
    I can't see the usb plug carrying enough current to power those 3 xml2 leds.
    If true, it could be a cool solution.

  90. #190
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    I am thinking of building a battery pack for my SSX2. I haven't used it yet, but I don't expect too much from stock batteries since the price was $32...

    I've gone through posts in this and some other topics and to sum it up, I have to buy housing. There are 3 contenders:
    1.) 2S2P 7.4V 18650 Holder with Battery Build-in PCM Protection Circuit Module
    2.) 4 x 18650 Battery Set for Bicycle Light
    3.) Solarstorm portable water-proof 4*18650 battery box rechargeable battery case

    Which one to choose? Since 1 and 3 are cheaper and batteries in 2 are probably crap am deciding between 1 and 3. 3 has better, waterproof housing, so 3 wins.
    Did I miss something?

    Once I have housing I only need 4 good batteries and we are ready to go. I will order batteries that Kir mentioned in this post.

    Edit: hmm like someone already mentioned postage price for Solarstorm housing is crazy. It looks like I will have to wait for other stores to get them.

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    Kir, or anyone else.

    Can you please confirm that the favourite battery holder, link:

    High Quality Rechargeable 8.4v 4*18650 4400 mAh bicycle light battery pack for solarstorm X2 bike light of battery set-in Rechargeable Batteries from Electrical Equipment & Supplies on Aliexpress.com

    Works with (connects to) the Solarstorm X2, the Solarstorm X2 review thread is inconclusive.

  92. #192
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    Quote Originally Posted by JakeS View Post
    I think this battery outputs 8.4v from the charging socket and 5v from the usb. If so, it's multi purpose.
    I can't see the usb plug carrying enough current to power those 3 xml2 leds.
    If true, it could be a cool solution.
    Dual outputs...hmm, this could work. Gotta order it to test.

    Which one to choose? Since 1 and 3 are cheaper and batteries in 2 are probably crap am deciding between 1 and 3. 3 has better, waterproof housing, so 3 wins.
    Did I miss something?
    1 is just a holder, you'll have to solder connector to it and use some kinda of bag to store it.
    2 is tested and proven to work great. Even if batteries are crap its still worth it at $13
    3 - we don't know anything about it yet and its more expensive, so its hard to say

    Works with (connects to) the Solarstorm X2, the Solarstorm X2 review thread is inconclusive.
    It will work but it won't be waterproof like original SSX2 connector and you'll have to cut off a few mm of extra rubber from it to fully insert it into SSX2 connector.

  93. #193
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    Quote Originally Posted by Kir View Post
    3 - we don't know anything about it yet and its more expensive, so its hard to say
    If the batteries in the other pack for $12 are not useful it is cheaper in case that you don't have to pay postage. You've also mentioned that 2 is not made to be open to often. Solarstorm version looks (on pictures) better in that respect and connector is probably fully compatible with SSX2.

    I agree option 2 is probably worth it. With original and that battery you can probably get enough of power for a few hours.

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    Are the Magichsine/Clone battery chargers suitable for use with these packs or can anyone recommend anything better? Especially if I'm going to be putting high quality 3400mAh Panasonic cells in these cases.

    Thanks
    Tom

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    Hi all,
    Just got a Solarstorm X2 from some seller on ebay. The light is great, however the battery pack is terrible. After charging all day and attaching it to the light, the indicator leds go from 3 leds to 2 after only a few seconds on low beam. After doing some research on this site, I realized that I probably got a dud since mine has the blue shrink wrap. Does anyone have a suggestion for a good "plug and play" battery upgrade for this light? I don't want to get into soldering and buying separate cells, etc. Also would still like to use the "waterproof connector" functionality if possible. I apologize if someone has already answered a similar question... I'm trying to decide whether to pay the money to return the light to China or bite the bullet and buy a new battery pack for it.

  96. #196
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    Replacement 8.4V 6600mAh Rechargeable Battery Packs

    I bought two of these Replacement 8.4V 6600mAh Rechargeable Battery Packs last week from Amazon, tried them last night for two hours on my basic china lights( 1 triple XML & 1 single XML), worked great. Decent pouch, velcro attachment. $17ea + 2day free shipping for Prime members.

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    Quote Originally Posted by ruffrydah View Post
    Hi all,
    Just got a Solarstorm X2 from some seller on ebay. The light is great, however the battery pack is terrible. After charging all day and attaching it to the light, the indicator leds go from 3 leds to 2 after only a few seconds on low beam. After doing some research on this site, I realized that I probably got a dud since mine has the blue shrink wrap. Does anyone have a suggestion for a good "plug and play" battery upgrade for this light? I don't want to get into soldering and buying separate cells, etc. Also would still like to use the "waterproof connector" functionality if possible. I apologize if someone has already answered a similar question... I'm trying to decide whether to pay the money to return the light to China or bite the bullet and buy a new battery pack for it.
    Last edited by patski; 10-05-2013 at 08:56 AM.

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    patski, thanks for the suggestion, that sounds like a decent deal, especially with free 2 day shipping!

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    Hey guys, I think I'm going to order a Solarstorm x2 head only and the Solarstorm battery pack that Kir found (Aliexpress.com : Buy Solarstorm portable water proof 4*18650 battery box rechargeable battery case used for bike light from Reliable Other Batteries suppliers on Shenzhen Blackshadow Technology Co., LTD). The only thing I'm unsure about is if I fill the battery pack with some nice cells, what charger can I use to charge them while they're in the pack? Anyone know a seller which sells just the charging cable?

    Edit: I found the solarstorm charger on lightsmall, the charger (like all the bike pack chargers) is a 8.4v Li-po charger. My question now is: if I use normal 3.7v 18650s in the 2s-2p formation that will make the pack 7.4v (I think). Does that mean that an 8.4v charger will somehow overcharge the cells?

    Cheers!
    Last edited by Lord Marmaduke; 10-05-2013 at 09:01 AM.

  99. #199
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    Quote Originally Posted by Lord Marmaduke View Post
    Edit: I found the solarstorm charger on lightsmall, the charger (like all the bike pack chargers) is a 8.4v Li-po charger. My question now is: if I use normal 3.7v 18650s in the 2s-2p formation that will make the pack 7.4v (I think). Does that mean that an 8.4v charger will somehow overcharge the cells?
    18650s are 3.7V nominal and 4.2V fresh off the charger so 8.4V charger is correct for 2S setups.

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    Thanks that's great

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