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Thread: UltraFire UF-H2

  1. #31
    Flashaholic YourTime's Avatar
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    Default Re: UltraFire UF-H2

    The only draw back with Ultrafire headlamp is non water resistance.


  2. #32
    Flashaholic* subwoofer's Avatar
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    Default Re: UltraFire UF-H2

    Some more information following my previous posts about parasitic drain. I have measured the drain now for the H3 (UF-H3 using 18650) and the H2 (UF-H2 using LSD Ni-Mh and a 14500).

    Constant parasitic current drain:
    H3 - 30uA (0.03mA)
    H2 (Ni-Mh LSD type) - 4.38mA
    H2 (14500 Li-ion) - 700uA (0.7mA)

    What is weird here is that the parasitic drain in the H2 with a higher voltage battery is lower.

    So with a fully charged 2100mAh Ni-Mh battery the parasitic drain alone will discharge the battery completely in 20 days!

    The Li-ion 14500 would fare a little better and last 53 days.

    For the H3 with an 18650, based on a 2400mAh battery this would last over 9 years before the parasitic drain fully discharged the battery! Quite a difference.

    Still, knowing this makes it easy to simply undo the end cap a couple of turns when not using the H2 and then the parasitic drain is nothing at all, so is only governed by the battery's own self discharge.

    Still a good little torch as long as you get one knowing the limitations.
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  3. #33
    Flashaholic* Rexlion's Avatar
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    Default Re: UltraFire UF-H2

    Time to write an update. The UF-H2 turned out to be a quirky, lousy piece of junk. It started turning itself on and ruined a 14500 cell. I began unscrewing the tailcap to lock it out when not in use. But it went downhill from there... sometimes it would come on as soon as I tightened the tailcap and the switch would have no effect. Then it would work right for a while. Then nothing would turn it on. I got fed up and pitched the thing, and I did what I should have done to begin with: I bought a Zebralight.
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  4. #34

    Default Re: UltraFire UF-H2

    Quote Originally Posted by Rexlion View Post
    Time to write an update. The UF-H2 turned out to be a quirky, lousy piece of junk. It started turning itself on and ruined a 14500 cell. I began unscrewing the tailcap to lock it out when not in use. But it went downhill from there... sometimes it would come on as soon as I tightened the tailcap and the switch would have no effect. Then it would work right for a while. Then nothing would turn it on. I got fed up and pitched the thing, and I did what I should have done to begin with: I bought a Zebralight.
    Thank you for the update! That was my biggest concern about this cheap copy: durability of the switch...

  5. #35
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    Default Re: UltraFire UF-H2

    Quote Originally Posted by airb View Post
    about this cheap copy
    nice review, thanks!

    the ultrafire reminds me of Zebralight headlamps. but i cant tell who copied the design from whom. ultrafire is much longer in business than Zebralight who is a very young US-company.

    so maybe Zebralight copied this design from ultrafire.
    Last edited by kreisler; 11-30-2011 at 12:59 AM.

  6. #36
    Enlightened fedcas's Avatar
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    Default Re: UltraFire UF-H2

    mmh... what's the difference between uf-h2 and uf-h2b?

  7. #37
    Flashaholic* Rexlion's Avatar
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    Default Re: UltraFire UF-H2

    My former H2 started on high and if you then held the switch down it would dim, and where you let go it stayed (till you turned it off or else held it down again). I just looked at the H2B specs on KD and they say it has a 2 mode switch, high and SOS.
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  8. #38
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    Default Re: UltraFire UF-H2

    My UF-H2B ramps up or down continously from whatever setting was last used (it has memory of not just what level was last used, but what direction ramping got there) to Max/Min, then down/up to min then back up to max then down to min etc.
    Last edited by Gregozedobe; 12-29-2011 at 09:02 AM.
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  9. #39

    Default Re: UltraFire UF-H2

    I also got UF-H1D (16340) & UF-H3 (18650) for months, both seems to self discharged in days for 16340 & weeks for 18650 (I dont know why), so I just loosen the tail cap when not in use.

    Btw, H3 were quite hot to the touch in use, I'm quite concern about it against the big amperage battery inside, could one day it blow a hole on my forehead ?

    How I wish if it has fixed output levels rather than ramping, otherwise its an awesome budget choice of headlamp, but I plan to get a Zebralight headlamp next year
    Last edited by iron potato; 12-29-2011 at 10:30 AM.

  10. #40

    Default Re: UltraFire UF-H2

    I bought a Zebralight first and had problems. I just got the Ultrafire UF-H2b and actually think it is better than the ZL. It works which is already a big step up from my ZL H1. My H1 died on the second day of use!

    The UF has a magnet in the tail cap that let's you pop it on metal objects and be used as a work light. The UF has better fit and finish and just feels nicer in the hand. It has a better IU and switch and doesn't run as hot or burn your hand like my ZL POS did.

    I am concerned about lAck of waterproofing and parasitic drain on the UF but I use it every day and not in the weather so shouldn't be a problem. I always carry spare AAs so if I find it dead, I will just pop in another Eneloope or one of the alkalines I have stashed in my vehicle or bag. No problem.

  11. #41
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    Default Re: UltraFire UF-H2

    Quote Originally Posted by speedsix View Post
    I bought a Zebralight first and had problems. I just got the Ultrafire UF-H2b and actually think it is better than the ZL. It works which is already a big step up from my ZL H1. My H1 died on the second day of use!
    Which model ZL did you have ? I'm not familiar with a "H1". Did you send your ZL back to be fixed/replaced ?
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  12. #42

    Default Re: UltraFire UF-H2

    Quote Originally Posted by Gregozedobe View Post
    Which model ZL did you have ? I'm not familiar with a "H1". Did you send your ZL back to be fixed/replaced ?
    Sorry, I had the H51. It stopped working on the second day of use and I sent it back. It would go into ultra low mode and just get stuck there. It also would get very hot with only 1-2 mins of use. Too hot to hold with bare hands.

    I have been using my Ultrafire everyday at work and just bought a spare to keep at home. Great light and while not quite as brit as the ZL, it is far more reliable and doesn't get turned on by accident like the ZL does. That switch on the ZL is too easy to press. I felt a burning in my pocket and realized it was on.

    I really like the ZL design and idea but the one and only product I had from them was a total pile of junk. Prob won't ever buy another since I can 2-3 of the far superior Ultrafires for the same price. If the ZL H51 and the Ultrafire cost the same, I would buy the Ultrafire.

  13. #43

    Default Re: UltraFire UF-H2

    Quote Originally Posted by speedsix View Post
    I had the H51. It stopped working on the second day of use and I sent it back. It would go into ultra low mode and just get stuck there. It also would get very hot with only 1-2 mins of use. Too hot to hold with bare hands.
    i think you should just put that in your sig line. save you the trouble of typing it over and over since you seem to do so every time you post in the headlamp forum.

  14. #44

    Default Re: UltraFire UF-H2

    So what percentage of zl haters are there rivals?

  15. #45
    Flashaholic* subwoofer's Avatar
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    Default Re: UltraFire UF-H2

    Quote Originally Posted by speedsix View Post
    Sorry, I had the H51. It stopped working on the second day of use and I sent it back....

    I really like the ZL design and idea but the one and only product I had from them was a total pile of junk. Prob won't ever buy another since I can 2-3 of the far superior Ultrafires for the same price. If the ZL H51 and the Ultrafire cost the same, I would buy the Ultrafire.
    Strange, as I have the Ultrafire H2 (not the B version) and it is badly made, has terrible parasitic drain and the battery cap threads feel like they are going to slip.

    My H51 on the other hand is fantastic quality much brighter with immediate access to low or high. I would buy ZL every time as the H2 was a waste of money (or an education in you get what you pay for). I then bought the SC51.

    Admittedly I also have the Ultrafire H3 which is much better made (or appears that way, maybe because it is bigger) which has far lower parasitic drain and I use regularly. The H2 unfortunately I could not recommend and don't want to risk wasting money buying the B version.

    I can understand your reluctance after a negative first ZL experience, but I think you were very unlucky.
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  16. #46

    Default Re: UltraFire UF-H2

    Could be but I am very happy with the Ultrafire so far. It may have some drain but it is not a big issue for me as I use it almost every day and have Eneloops and spares. I go through a lot of batteries in my hand helds and headlights so I am always ready with a backup light or battery.

    The ZL overall quality seemed good as far fit and finish but the switch was easy to accidentally turn on which the Ultrafire is not. It is very possible that the ZL I had was a fluke and a lemon and not indicative of their quality in general but when I pay over $60 for a light, I expect it to work. When I pay $10 for a light, I expect some issues. At $60+, I don't want to have to trouble shoot it in the first 2 days.

    My $19 Streamlight Stylus Pro has been my work EDC since I bought it and it has never failed in anyway. I have used that light 15-20 times every day and dropped it several times.

  17. #47

    Default Re: UltraFire UF-H2

    Quote Originally Posted by robostudent5000 View Post
    i think you should just put that in your sig line. save you the trouble of typing it over and over since you seem to do so every time you post in the headlamp forum.
    Am I not allowed to say anything negative about a product that completely disappointed me? I thought that was sort of the point of this forum. If I am the only one that has ever had a bad ZL product (which I am not) than the readers can take my view for what it is. I never said that all ZLs were bad, only the one I got. If 100 say it is great and 20 people have problems and they all voice their experience honestly, that is the way it is supposed to work. If we are not allowed to say anything negative because they are a sponsor then how can we trust anything on this forum?

  18. #48

    Default Re: UltraFire UF-H2

    Quote Originally Posted by speedsix View Post
    Am I not allowed to say anything negative about a product that completely disappointed me? I thought that was sort of the point of this forum. If I am the only one that has ever had a bad ZL product (which I am not) than the readers can take my view for what it is. I never said that all ZLs were bad, only the one I got. If 100 say it is great and 20 people have problems and they all voice their experience honestly, that is the way it is supposed to work. If we are not allowed to say anything negative because they are a sponsor then how can we trust anything on this forum?
    first of all, i was just having some fun. second, you can say whatever you want as many times as you want even if it's the same thing over and over again. third, so can i. fourth, you had the ZL for two days, and you got 95% of your money back, your level of disappointment seems disproportionately high to the level of time/money invested - honestly, i've met guys divorced from multi-year marriages that weren't as bitter as you (i kid, i kid ). and last, i was just having some fun. c'mon laugh a little, what's life without laughter.

    anyway, i bought a PT Eos once that was defective out of the box. i was very disappointed because for the price i paid i was expecting a first quality item. i was also disappointed that i had to spend my own money to send it in for replacement. i have mentioned this a couple times on this forum, but only a couple... well, i guess it's three times since i'm mentioning it now. anyhow, i gave the replacement a chance and was happy with it. i think the PT Eos is a good headlamp and PT a good company. i had one brief bad experience. it did not sour me on all PT's. and i didn't spam every single PT thread about how awfully disappointed i was. i'm just saying.

    i'm not saying that you should follow my example or anything... oh wait, no, that's exactly what i'm saying, isn't it.again, i kid i kid.
    Last edited by robostudent5000; 01-09-2012 at 01:02 AM.

  19. #49

    Default Re: UltraFire UF-H2


    Mine is an UltraFire UF-H2B. I love it! It works also on a Trustfire 14500 protected battery. A feature of this light that many are not aware of is that if you hold down the switch while starting it, it will come on in the brightest setting. Hoo-yah! This is a terrific little light, only problem being the OSO mode instead of SOS ") Got (2) of them on a group buy for $17/ea. Not for sale!
    Last edited by saypat; 01-09-2012 at 06:05 PM.
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  20. #50

    Default Re: UltraFire UF-H2

    Well, I am not going to get into a fight over a headlamp. I am a geek but I am not a total geek.

    I am happy with my Ultrafire and wasn't happy with the ZL. I just bought a second Ultrafire as a spare and will probably not bother with ZL in the future because for 1/3rd the cost, I can get a light that is 99% as good in the ways that count to me. In fact, I consider the Ultrafire a flat out superior light regardless of price because of the different features and design aspects such as the magnetic tail cap and cooler running temps.

    I am basing this on owning a single example of each but in my very limited experience, the ZL was very Bad and the Ultrafire was very good. Maybe I got the only crappy ZL ever made and the only good Ultrafire but I seriously doubt it. I might be missing out on a good light by not buying any more of the ZLs but with good lights like the UF around, I am not missing out on much.

    Probably the biggest downside to the UF is the parasitic battery drain. I went to use my UF this evening at work and when I pressed the switch, nothing! I was like, WTF? Then I remembered that I had unscrewed the tail cap to limit the power loss and all was good. It produces a nice floody even lit for working up close. It is worthless for any distance but same is true of the ZL. For working on things at arms length, it is outstanding and makes me not miss my PT EOS one bit.

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