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  1. #251
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    Of course you're right. I clearly need to brush up my reading skills

    Anyhow, it was the only place I could find it without battery so I'm happy.

    /Johan

  2. #252
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    Are these things all the same and coming from the same place? Are they clones of clones of clones? They all say "Yindling" and are XML U2s. This says it doesn't come with the battery but is ~$7 less than the one on Fasttech or DX.
    Geologist by trade...bicycle mechanic (former) by the grace of God!

    2012 Specialized Stumpy EVO 29 HT

  3. #253
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    I think the cloned body is just only one, with the outside a bit reworked and the inner electronics can be absolute wilderness (that can be a clone of clone of clone of ...) :-)

  4. #254
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    Christmas comes early...


  5. #255
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    do you collect them? :-D

  6. #256
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    Lights weigh-in






  7. #257
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    Nice.

    Looking forward to whatever comes after weigh-in

    /Johan

  8. #258
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    Quote Originally Posted by bhocewar View Post
    Christmas comes early...



  9. #259
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    bhocewar......you might want to do your own thread so your info doesn't get buried in this one Titled "Gemini Duo clone"

  10. #260
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    Quote Originally Posted by the mayor View Post
    bhocewar......you might want to do your own thread so your info doesn't get buried in this one Titled "Gemini Duo clone"
    I started a thread called "2013 Budget Light Shootout" to try and get info like this in one place. That would be a great place to post it. Budget lights reviews are often scattered

  11. #261
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    So we shall define some measurement rules there (photos, current, ...)

  12. #262
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    Ok I moved my test results here:

    2013 Budget Light Shootout

  13. #263
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  14. #264
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    I had a weird problem with my Duo clone last night.

    Indicator went from green to red, and within seconds, the light shut off.

    I assumed battery was dead (although it had been fully charged, and we were only about 1hr 40m into the ride).

    I swapped to a spare battery, light turned right on and I finished the ride.

    Today I thought, "gee seems like a fresh battery should have lasted longer then it did", so I plugged it back into the stock battery, set it in front of a fan, turned it on high, and it ran for a little over an hour!!

    So then I thought maybe it overheated last night and shut itself off. It was kind of warm (low 50's), and it did happen during a climb, where maybe it wasn't getting optimal air moving over it.
    But if that were the case, I wouldn't think it would turn right back on when I swapped to another battery. Or would it?

    What do you guys think?

  15. #265
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    You could have tried just unplugging and replugging the first battery into the light. Maybe when you unplugged the battery it reset the circuit. Or maybe it's the quality of the original battery? The voltage of the cells dropped because of the high current, causing the light to think it was almost dead? I don't know.

    This sudden turn-off is not a good situation.

  16. #266
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    Quote Originally Posted by varider View Post
    Maybe when you unplugged the battery it reset the circuit. Or maybe it's the quality of the original battery? The voltage of the cells dropped because of the high current, causing the light to think it was almost dead.

    This sudden turn-off is not a good situation.
    X2. I've noticed this happening with my Olympia's running off a 4 cell in high. But mine just drops down to lower setting. I would suggest get quality packs and see what it does. My gemini duos run fine on high with a 4 cell unless the overheat protection kicks in and drops down to a lower setting.

  17. #267
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    Yinding goes from green to red to blinking red.
    It might be that the overheat protection kicked in and turned it off.
    If the body was too hot to hold it in your hands for a few seconds, then it overheated.
    As I mentioned before. Dont run it on high when not moving at least 10km/h. That goes for all lamps including branded.

  18. #268
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    Quote Originally Posted by varider View Post
    You could have tried just unplugging and replugging the first battery into the light. Maybe when you unplugged the battery it reset the circuit. Or maybe it's the quality of the original battery? The voltage of the cells dropped because of the high current, causing the light to think it was almost dead? I don't know.

    This sudden turn-off is not a good situation.
    Could be onto something there. I noticed a quirk with mine, if you quickly plug battery into the light -- even if the battery is freshly charged -- it will blink red. But if you slowly plug in the battery, the switch illuminates green.

  19. #269
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    I tested original Yinding battery and its capacity is around 3500mAh. Green indicator light goes red at around 6,2V. Charger charges battery pack to 8,22V and when charging completly empty batteries it overheats and alternating on/off (red/green). I drilled some holes to add some cooling and we will see if it gets better.

  20. #270
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    Anyone purchased a yinding recently? If so from where?
    I ordered from fasttech, although the site states its in stock. My order is showing as restocking as of mid last week!
    Dx and wallbuys appear to be out of stock of this in black.

    I feel I may have missed out on this little gem.
    Last edited by steviemidnight; 11-11-2013 at 08:52 AM.

  21. #271
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    Quote Originally Posted by steviemidnight View Post
    Anyone purchased a yinding recently? If so from where?
    I ordered from fasttech, although the site states its in stock. My order is showing as restocking as of mid last week!
    Dx and wallbuys appear to be out of stock of this in black.

    I feel I may have missed out on this little gem.
    I ordered one from Fasttech on Friday. Just checked my order and it shows shipping tomorrow, so we will see. I will update tomorrow

  22. #272
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    Quote Originally Posted by GJHS View Post
    I ordered one from Fasttech on Friday. Just checked my order and it shows shipping tomorrow, so we will see. I will update tomorrow
    I placed my order two weeks ago and it has said restocking the entire time.

  23. #273
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    Fasttech seem to be having issues with shipping as well. Hongkong Post - Notices - Delay In Outbound Air Mail Services .

    I recently ordered without battery (to replace a drowned MJ872 light head) from this alibaba seller Latest Unique Design Cree XML 2*U2 Bike Light headlight/lamp Front Light 2300 LM 4 mode -in Bicycle Light from Sports & Entertainment on Aliexpress.com
    They shipped in a couple of days but I'm still waiting delivery.

    /Johan

  24. #274
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    Thanks fir the info. Hmmm well least I'm not alone. I raised a case at the weekend but have had no response from them. I'll update this thread if it ships or I get a response.

  25. #275
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    Quote Originally Posted by bhocewar View Post
    I tested original Yinding battery and its capacity is around 3500mAh. Green indicator light goes red at around 6,2V. Charger charges battery pack to 8,22V and when charging completly empty batteries it overheats and alternating on/off (red/green). I drilled some holes to add some cooling and we will see if it gets better.
    Just throw that thing in the trash and buy one from action led.

  26. #276
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    Quote Originally Posted by steviemidnight View Post
    I'll update this thread if it ships or I get a response.
    I ordered a light from Kaidomain a bit ago and they shipped the battery and the light separately, because of the delay noted above for battery shipping. The fasttech restocking issue is, I believe, separate. I had a duo clone on order with them for two weeks and it continued to show 'restocking' the whole time. I eventually cancelled the order after they (seemed to) ignore my questions. They are usually better at responding, so my guess is that particular light is on the indefinite wait list ...

  27. #277
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    Quote Originally Posted by steviemidnight View Post
    Thanks fir the info. Hmmm well least I'm not alone. I raised a case at the weekend but have had no response from them. I'll update this thread if it ships or I get a response.
    I noticed you're not in the states, the banner up top said "Hong Kong Post Alert: FastTech was told of a 15-day delay at Hong Kong Post for non-US shipping address. FastTech offers at least 3 alternative shipping carriers and we are starting to re-route non-US orders away from Hong Kong Post."

    I chose DHL as my shipping option here in the US. So that's what is probably holding it up

  28. #278
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    Hmm. I ordered 2 from FastTech the 8th - blue light shows "Scheduled Ship Date: 11/11/2013", red light shows "Ready to ship".
    This isn't a "you're doing it wrong" topic.

    WSS/OSS: Open Source Sealant

  29. #279
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    Quote Originally Posted by wadester View Post
    Hmm. I ordered 2 from FastTech the 8th - blue light shows "Scheduled Ship Date: 11/11/2013", red light shows "Ready to ship".
    When I ordered mine, it showed a scheduled ship date for 2-3 days. When that date came, it changed to "restocking" and remained there until I cancelled it.

  30. #280
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    Yeah mine has been in the mail for three weeks now.

  31. #281
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    There's some black ones for sale on Fleabay, but they're $75 and ship from China.

    For that kind of money you'd be better off buying a real Gemini Duo lighthead (the old 2013 model) from Action LED, $83.70 with closeout13 coupon (if you don't need the battery, charger, and accessories).

  32. #282
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    Well fasttech responded. It's out of stock as expected and they have been unable to restock.

    Actual response:
    "We apologize that the item you purchased SKU 1443727 is currently out of stock due to the production problem, we have been looking for alternative sources of supply these days, but we could not find it from the markets or manufacturers.

    Sorry for causing you such an inconvenience, the suppliers is not able to provide the ETA of the stock, would you mind have an exchange? Or if you prefer to have a refund for this item, please let me know and I will arrange for you right away."

  33. #283
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    I received a similar message from Fasttech for my duo clone. It sat in Hong Kong for 2 weeks before they just sent me a refund. I like the light would like to find one.

  34. #284
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    In another, german forum, someone just posted a message he got from Wallbuys:

    hello xxxx

    good news is coming, the yinding factory just tell me that they will finish the black bike lamp soon, and if customers buy it ,wallbuys can ship it in 19th November , greeting !!
    if members want to buy the black one, it is time to buy now !!
    $46.46 Yinding 2 x CREE XM-L U2 1800LM 4-Mode White LED Bike Light / Headlamp-Black(4x18650)

    Without any guarantees or relationships to Wallbuys (other than having bought and received two of them myself from there, ordered Oct 22nd, delivered today), just bridging the message...

  35. #285
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    Thanks it's worth a punt, else I was planning on buying it in red and spraying it

  36. #286
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    I had similar issues w/Fastech showing my light as "in processing" at the beginning of October when others started showing it as out of stock. I cancelled the order and bought through DX. Recieved it in about 2 weeks. They're still showing it as available to ship:
    YINDING YD-2XU2 2 x CREE XM-L U2 1200lm 4-Mode White Bicycle Light / Headlamp - Red (4 x 18650) - Free Shipping - DealExtreme

    At the time I bought the above (red), both the black and blue were shown as sold out. The blue is now showing stock:
    YINDING YD-2XU2 2 x CREE XM-L U2 1200lm 4-Mode White Bicycle Headlamp - Blue (4 x 18650) - Free Shipping - DealExtreme

    ....while the black is still listed as sold out:
    YINDING YD-2XU2 2 x Cree XM-L U2 1200lm 4-Mode White Bicycle Light / Headlamp - Black (4 x 18650) - Free Shipping - DealExtreme

  37. #287
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    If you hate blue or red...you can make them silver by dipping stripped housing (doing some desoldering) into a NaOH 25-30% water solution (oven cleaners, drain uncloggers, Mr Muscle) for 5-10minutes and give it a good after wash with water. Be carefull and work with gloves.
    You can also anodise them back to black if you want, but this process is a bit harder to do, so best to find a local company that anodises stuff. It shouldnt be expensive.

  38. #288
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    We've been a bit busy lately but I found time today to catch up with the forum and thought I'd put in a few observations here.
    The rated LED life span is not when they burn out (stop working). Rather it's when their output degrades to 70% of the original output. The hotter they get the faster they degrade.
    Gemini Duo's and Gloworm X2's both have the led's mounted directly to the housing so there is a fast and efficient path for the heat to move away from the led and into the air.
    From what I see in the pictures of this clone, the led is mounted to a subassembly which is then mounted to the housing and insulated from it by a gasket. If the housing is not getting too hot that's a bad sign that the heat is being held in the subassembly.

    There was speculation that the housing of these clones was same as the Duo. Obviously not so.

    There are counterfeit CREE led's being sold in China. Even if these lights use the real thing they are almost certainly the cheaper low bins. Someone mentioned "why does it matter. If there getting the same current there putting out the same light" Certainly not true. They convert less of that current to light and more to heat.

    At $42 plus some time these may look like a bargain but I'd wager that 3 years down the road it will look a little different. I've had very few customers with an issue after 2-3 years with their Gemini light.
    Jim Harger
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  39. #289
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    I don't think anyone here doubts a Gemini is a better product. It's just a question of what will determine the light's lifespan: product failure or obsolescence due to newer technology. If I can get 2 years of use out of this thing for $50 and then buy the next generation for another $50? That works for me. My hangup on these products is that I treat it like a troubled friend from the past: Fun to hang out with, but I don't tell my wife about it, don't let my kids near it, don't recommend it to friends and it sleeps(charges) outside.

  40. #290
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    Quote Originally Posted by Action LED Lights View Post
    Gemini Duo's and Gloworm X2's both have the led's mounted directly to the housing so there is a fast and efficient path for the heat to move away from the led and into the air.
    From what I see in the pictures of this clone, the led is mounted to a subassembly which is then mounted to the housing and insulated from it by a gasket.
    Are you sure? On this picture, it's clear that LED base is mounted directly to the light case's surface:


    At $42 plus some time these may look like a bargain but I'd wager that 3 years down the road it will look a little different. I've had very few customers with an issue after 2-3 years with their Gemini light.
    Maybe, but IMHO it's highly unlikely to expect someone not to upgrade the light for three years...

  41. #291
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    These lights are more likely to be convenient for DIY people that have some electrical skills/knowledge. After 2-3 years we throw away those emitters and get more efficient replacement. But here in this duo clone it might be a great fun to replace them :-D

  42. #292
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    Quote Originally Posted by MK96 View Post
    But here in this duo clone it might be a great fun to replace them :-D
    Why? I see no obstacles to put there new LEDs on two separate round bases...

  43. #293
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    I mean that light is a bit small. But yes, you can replace them with 2 copper based.

  44. #294
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    Quote Originally Posted by -Archie- View Post
    Are you sure? On this picture, it's clear that LED base is mounted directly to the light case's surface
    Your right. The picture I was looking at was the rear of the light.
    Jim Harger
    Action LED Lights
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  45. #295
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    Quote Originally Posted by Action LED Lights View Post
    There are counterfeit CREE led's being sold in China. Even if these lights use the real thing they are almost certainly the cheaper low bins. Someone mentioned "why does it matter. If there getting the same current there putting out the same light" Certainly not true. They convert less of that current to light and more to heat.
    IF they use different bins or IF they use counterfeit led's.

    I'm not convinced that the three main cheap dual emitter lights actually use counterfeit led or subpar leds. They seem pretty good to me.

    A year from now there will be something brighter and all the current stuff will be obsolete anyway. The cheap light may or may not be working a year from now, but that doesn't even seem relevant because we will just buy the new stuff anyway.

  46. #296
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    Quote Originally Posted by varider View Post
    A year from now there will be something brighter and all the current stuff will be obsolete anyway. The cheap light may or may not be working a year from now, but that doesn't even seem relevant because we will just buy the new stuff anyway.
    The rapid improvement of led's and the occasional need for repair is why we are working on a modular design that will be easily upgradeable by any user. Hope to have it out for next fall.
    Jim Harger
    Action LED Lights
    www.action-led-lights.com

  47. #297
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    Quote Originally Posted by Action LED Lights View Post
    The rapid improvement of led's and the occasional need for repair is why we are working on a modular design that will be easily upgradeable by any user. Hope to have it out for next fall.
    ^^ This guy gets it!
    Looking forward to seeing what you come up with!

  48. #298
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    Fasttech delivered. After the same messages regarding the shipping, it finally showed up after about 3+ weeks. Everything seems to be in order and virtually identical to the DUO. However, keep in mind that you don't get a cord extention (which I use all the time), the head band is of far less quality, you don't get a helmet mount, and obviously if you ever have an issue, throw it away. The light however is nice IMO.

    I've got three lights from Gemini and have been very happy with them, I just got this as a relatively cheap experiment for a bar mount climbing light, which it is more than sufficient for.

  49. #299
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    Quote Originally Posted by Action LED Lights View Post
    The rapid improvement of led's and the occasional need for repair is why we are working on a modular design that will be easily upgradeable by any user. Hope to have it out for next fall.
    Looking forward to it. Are you designing yourself, or is it a collaboration with one of the major companies?

  50. #300
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    Mine arrived on friday…. A month from order.

    Initial shock because the box showed the generic single XML I have a few of already.

    Light head looks top quality. Battery, not so much.

    I had to set my fan on high to cool it below "ouch" during the runtime tests.
    Ran for three hours on "high"… the output was hugely diminished for the last hour. With a gloworm battery I got more proper runtime but it didn't throttle back at the end.

    Looks like I'll mount it between shifter and grip on the MTB, so no need for a remote switch.

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