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  1. #76
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    Great write up! Looking forward to part 2. My issue is I have my hand in too many bike related cookie jars so I got this light instead of an X1/X2.

  2. #77
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    Tie a knot like this on the cables

    to prevent the contacts coming loose.


    /Håkan
    SWEDEN

  3. #78
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    Quote Originally Posted by HakanC View Post
    Tie a knot like this on the cables

    to prevent the contacts coming loose.


    /Håkan
    SWEDEN
    Just to clear things up a bit; I just tried the D99 with every battery I have. Both the Bikeray and Xeccon batteries work fine with this lamp and hold well enough that I would not be worried about it coming loose. The funny thing is that the battery that had the poorest connection was the battery I got with the D/X Quad XM-L lamp.

    I should note here that D/X sells batteries with a couple variations on the ( female ) plug. It also seems that the plastic on the male end of the lamp ( D99 ) is not built up enough. This is not really a big problem though as mine works fine with all the batteries. However if you want a tighter ( more waterproof ) fit easy to fix by just wrapping some electrical tape around the plastic on the male end to make it bigger. If this is too much a bother than Håkan's idea should work fine as well.

    Since no one else mentioned it the strobe on the D99's are absolutely mental as far as the flash frequency goes. For bike use the flash should be more like 1 flash per sec. ( or 1 per 1.5 sec. ) That I could live with.

  4. #79
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    Quote Originally Posted by Cat-man-do View Post
    Since no one else mentioned it the strobe on the D99's are absolutely mental as far as the flash frequency goes.
    Absolutely true. I tested mine last night and just had to dance. It was like a rave in my garage.

    I just did a basic garage test against my X2 and all said above is true. Tint is bluer but don't know how much difference that will make on the trail. Hot spot is fairly bright, though narrower than my X2 puts out (and I've got spot/spot optics in my X2) I like the size of this light, and it appears well-made. That's all I can really say for now.

  5. #80
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    Good idea HakanC

  6. #81
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    Here's some pictures of the light compared to a Magicshine MJ-808E (with remote). There's also pictures of the two battery connectors. UltraFire D99 a promising new 2x light?-top-view-d99-comparison.jpgUltraFire D99 a promising new 2x light?-front-view-d99-comparison.jpgUltraFire D99 a promising new 2x light?-side-view-d99-comparison.jpg

    The D99 connector is the thinner of the two connectors. UltraFire D99 a promising new 2x light?-d99-connector-comparison.jpg
    UltraFire D99 a promising new 2x light?-magicshine-plug-connection.jpgUltraFire D99 a promising new 2x light?-d99-plug-connection.jpg

  7. #82
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    Quote Originally Posted by bad andy View Post
    Absolutely true. I tested mine last night and just had to dance. It was like a rave in my garage.

    I just did a basic garage test against my X2 and all said above is true. Tint is bluer but don't know how much difference that will make on the trail. Hot spot is fairly bright, though narrower than my X2 puts out (and I've got spot/spot optics in my X2) I like the size of this light, and it appears well-made. That's all I can really say for now.

    Thanks for that. I'm looking for a bar light for a friend and I was concerned with the smooth reflector. Now I know for sure it is too spotty.

  8. #83
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    Quote Originally Posted by PedroDank View Post
    Thanks for that. I'm looking for a bar light for a friend and I was concerned with the smooth reflector. Now I know for sure it is too spotty.
    No Pedro, the over-all beam pattern is not spotty ( although it does have a brighter center spot like most lamps ). Shine any lamp on a wall and it looks spotty. The D99 is not using reflectors it is using optics.

    I did take the front off mine tonight so I could take a look at the optic/emitter set-up. The emitters are mounted on a single ( custom? ) board. What didn't impress me was the internal O-ring around the emitter box. The O-ring sits too flush IMO. I can't see how it is going to prevent water from getting inside. I really do hope I'm wrong about that but I'll not be testing this lamp in the shower.

  9. #84
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    Hm, ok, Cat. But, either way, it should be less floody than others using OP reflector, right?
    Yeah, cheap Chinese lights and their waterproof capabilities are a concern. My 808 clone had two o-rings in the lenses and it did worked under small showers...but I was always concerned about that... Does this D99 also have 2 o-rings?

  10. #85
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    Quote Originally Posted by PedroDank View Post
    Hm, ok, Cat. But, either way, it should be less floody than others using OP reflector, right?
    Yeah, cheap Chinese lights and their waterproof capabilities are a concern. My 808 clone had two o-rings in the lenses and it did worked under small showers...but I was always concerned about that... Does this D99 also have 2 o-rings?
    No, I don't think so...reflectors are almost always give a more narrow beam pattern, even if they are OP. It compares well to other multi-emitter lamps and should satisfy most people that are looking for a wider beam pattern ( compared to single emitter lamps ).

    There is one O-ring inside the front of the lamp and an O-ring for each optic where it rests against the front of the lamp. The inside one is the one that has me worried as it sits in a groove and does not sit up very high. I suppose if you wanted to seal it better you could use some silicon but then that would be a little messy and cause a problem if you wanted to re-open the front.

  11. #86
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    Oh well, it's a fair weather light I take it. That suits me for off road, but if I decide to take it on the road...

    Still seems a good value till I can get a gloworm.

  12. #87
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    @ HakanC, I got my set today and am happy to report that the light-head, the charger, and the battery you asked about, are all a perfect fitting matches as far as connectors go. I was worried, but it was a roll of the dice that won, phew. Been charging that sucker for 6 hours now, and it's still going. Let's hope this battery is a good pick! I will report back later with full charge time, voltages, runtimes and try to do my first attempt at beamshots.

  13. #88
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    I got mine a few days ago. Noticed the head wire somewhat loose, only because the grommet-plug going in the housing was not set. I will seal the front and the plug too. I would suggest anybody running this in inclement weather to do this. Just waiting while I decide to screw another mounting system to it. The strobe is, as others noted, a "rave mode" pulsar certain to cause epileptic seizures. Too bad as it won't really be useful on the commute stylee -too crazy! Now I could put a gel on it, it'd be a brilliant tail light.

  14. #89
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    Quote Originally Posted by rpnbilly View Post
    @ HakanC, I got my set today and am happy to report that the light-head, the charger, and the battery you asked about, are all a perfect fitting matches as far as connectors go. I was worried, but it was a roll of the dice that won, phew.
    Thank you, that is good to know.


    I will report back later with full charge time, voltages, runtimes and try to do my first attempt at beamshots.
    I'm looking forward to your report.


    /Håkan
    SWEDEN

  15. #90
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    After what I am able to find out DX now sell the D99 light in three(3!) different versions:
    33.60 USD FandyFire D99
    39.50 USD UltraFire D99
    41.60 USD FANDYFIRE D99 - incl battery 4x18650 (but no charger?)


    /Håkan
    SWEDEN

  16. #91
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    FFire D99: Thermal shake down vs. Lux output / Runtime on 4-cell

    I'm doing a little run time test tonight using one of my 5200mAh ( 3 year old ) Bikeray 4-cell batteries. I just wanted to see what I could expect using a decent 4-cell with the D99. More info in a couple hours. I expect to get 2.5 hrs but we'll see.

    The lamp just went to "Blue" after one hour. The lamp does get hot. More on that when the test is completed.
    Last edited by Cat-man-do; 05-12-2013 at 02:03 PM. Reason: mistake on BR battery rating

  17. #92
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    Is the D99 light enough for the helmet?

  18. #93
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    FFire D99: Thermal test-lux output/ run time test, continued from last post.

    Quote Originally Posted by Cat-man-do View Post
    I'm doing a little run time test tonight using one of my 5200mAh ( 3 year old ) Bikeray 4-cell batteries. I just wanted to see what I could expect using a decent 4-cell with the D99. More info in a couple hours. I expect to get 2.5 hrs but we'll see.

    The lamp just went to "Blue" after one hour. The lamp does get hot. More on that when the test is completed.
    Finished the test. I got exactly 2hrs and 52 minutes on high with the Bikeray battery. Very good for a 3 year old battery if I do say so.
    During the test some things of note;

    The lamp ( on high L4 ) does get hot if not enough air is moving across the lamp. I did use a fan for the test but at the start had it set back a ways. After 15 minutes the lamp heated up to 126°F ( 52°C ). That is pretty hot, still the lamp did not do a thermal shut or power-down. At this point I moved the fan closer.

    Loss of light output at the 15 minute mark was about 16.5% of the initial 422 lux. That is pretty high. Once I moved the fan closer the lamp temperature dropped down to ~ 122°F ( 50°C ). It took a while for the emitters to cool but eventually the lux output began to rise. Once stabilized, the light output remained around 374 lux. At that level the loss is only about 11.6%. That is much better and the lamp was obviously brighter.

    The red led came on at the 2hr and 18 minute mark. Not soon after the lamp output began to fade a bit as the battery neared cut-off. At no point did the lamp power down to a lower level on it's own. The red led did not enter a "blinking mode" to indicate eminent shut down.

    All things considered if you don't let the lamp get too hot you should still get decent output. When I used mine last I never noticed the lamp getting too hot. Matter of fact it barely got warm but then again I don't always run the higher modes. Keep her on L2 or L3 and you should be fine. Wish there had been a blinking mode. That last warning before shut-down is priceless. ( * Oh, almost forgot to mention, I paid for this lamp with my own money. )
    Last edited by Cat-man-do; 05-12-2013 at 02:02 PM. Reason: mistake on BR battery rating

  19. #94
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    I did a little run test with the 6600mAh battery from DX, seems good! No power upon arrival, would not light up the lamp, back light, nothing. Took 7hrs20min to charge (1 Amp charger). Did a test on the highest level (L4) against my judgement r/t heat. With a fan running on it, I turned it on at 1640hrs, it ran on high with a green (wow so bright) backlight until it turned blue at 1825hrs (1hrs-45min), stayed blue until 1855 (30min), then red. I turned it off at this point. So in total on highest mode, 2hrs15mins!!! Blue and red backlight working, heat with the fan wasn't an issue. When I took it outside on the multi use pathways at night, as long as I was moving constantly, this unit did not have heat issues at all. More testing to come, waiting on a new multimeter, photographer volunteer and and to finish my round of nightshifts. Love the light, the battery is good so far, seems like 6600mAh is close to reality. Lighthead did not budge much from where I put it also. My new favourite light setup! will do another test runtime for level 3 soon.

  20. #95
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    Quote Originally Posted by rpnbilly View Post
    the battery is good so far, seems like 6600mAh is close to reality.
    Thank you for the follow up.
    It is good to know that a battery for less then 20 USD from DX is that good.
    8.4V 6600mAh Rechargeable 18650 Li-ion Battery Pack for Bicycle Lamp - Worldwide Free Shipping - DX

  21. #96
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    Quote Originally Posted by rpnbilly View Post
    I did a little run test with the 6600mAh battery from DX, seems good! No power upon arrival, would not light up the lamp, back light, nothing....... the battery is good so far, seems like 6600mAh is close to reality.....
    About your D/X battery; The fact that the battery would not work upon arrival is not a good sign. Usually batteries are shipped/stored with a partial charge. That charge would definitely operate the lamp. This could mean you have a bad battery. A good six cell 6600mAh battery should run the D99 over 4 hours on it's highest output level.

  22. #97
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    Isn't the D99 current draw 2200mA on high? With a 6600mAh battery, that would give 3 hours of max runtime on high.

    Skewing from the original topic...I haven't looked at batteries for a couple years. I'm amazed to see 3400mAh 18650 cells from Panasonic. A 4 cell 6800mAh pack sure would be tempting. Or, 6 cell 10200mAh. Wow!
    baker

  23. #98
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    Quote Originally Posted by baker View Post
    Isn't the D99 current draw 2200mA on high? With a 6600mAh battery, that would give 3 hours of max runtime on high.

    Skewing from the original topic...I haven't looked at batteries for a couple years. I'm amazed to see 3400mAh 18650 cells from Panasonic. A 4 cell 6800mAh pack sure would be tempting. Or, 6 cell 10200mAh. Wow!
    I don't know what the current draw is on the emitters. All I know is that if I got almost 3hrs of run time out of my old 5200mAh 4-cell, I would expect to get at least 4hrs from a good 6600mah 6-cell battery.
    Last edited by Cat-man-do; 05-12-2013 at 02:00 PM. Reason: mistake on BR battery rating

  24. #99
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    I was going by the specs at the dx site.

    UltraFire D99 2 x Cree T6 1600lm 5-Mode White Bicycle Headlamp - Black + Silver (4 x 18650)

    It wouldn't surprise me that they might be driven less than stated. :-)
    baker

  25. #100
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    UltraFire D99 a promising new 2x light?

    Quote Originally Posted by Cat-man-do View Post
    No, I don't think so...reflectors are almost always give a more narrow beam pattern, even if they are OP. It compares well to other multi-emitter lamps and should satisfy most people that are looking for a wider beam pattern ( compared to single emitter lamps ).
    Hm ok, thanks cat! I guess I'm going to ask my friend to buy this one so I can also confirm your statement eheh My friend will be my guinea pig

    The reviews are looking fine and I'm leaning towards this D99 now... I hope he trusts me!

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