Review: Ultrafire UF-H2 Infinitely Variable 1xAA Headlamp

The UF-H3 which could well have the same driver varies from about 3-120 lumens. I happen to have some 65mm long NiMH cells lying around if i can find them - they weren't where I first looked.

I also suspect that the UF-H3 does have the same driver, in which case it supports 3.7V, right?

That's what I'm thinking, which is why I'm looking for my 4/3A NiMH cells (Essentially 18650 in NiMH) which came from a laptop battery pack. Trying to make up a test adaptor for an AA Eneloop isn't working so time to play hunt the cell. I really must tidy up in this place.

Ah, 4/3A, I wondered if an 18650-sized NiMH battery existed. Thanks Don, please let us know if you get a chance.

fer18gts from ForoLinternas owns an UF-H3, he tried with one AA eneloop, and even with two in series, and it didn't light up..

Here you can have it for 29$: http://www.hkequipment.net/index.php?p=6&id=444&lang=en&msg=Session%20Expiried!&s=

Shipping 2$!!

Manafont should be convinced to sell it at that price.

Found the cells. Now where did I put the charger?

Yes, Fran is right, it must be a lithium only circuit. Which could mean there are two variants on the UF-H2.

Thanks for the great review. Very interesting light indeed and already added to my wishlist.

Just one question: If you lock out the tailcap to securely prevent the parasitic drain, how big is the risk that the tailcap comes off or closes the circuit accidently when carrying the light in a bag/pocket? Is this something that could be adjusted with a suitable o-ring?

Exactly none. There are two O rings - keep it between the two and no problem. At least on the H3

http://www.spark001.com/Products.aspx?ProductID=6

Pity it is $90 from Shiningbeam. I do doubt whether 360 lumens from a headlamp is actually useful but that's another story.

It depends on what you do with the headlight, I use a XM-L C2 as a headlight when skiing. Nice and bright, though I'd rather take my less bright Zebralight when viewing stuff at a closer distance : )

True.

For what I do with headlights, this is way past useful. |Others do different things.

I walk splay-footed. For me, skiing is an expensive way of hurting myself.

Thanks for the info.

Looking at the pictures at manafont there seems to be only one o-ring on the H2 tube but I think there is a second groove for an additional ring so it should work out fine. Well, I'll see when it arrives. Moved from "wish" to "ordered" ;)

Huny74, I think that there's very little risk of losing the tailcap if you carry it slightly unscrewed. It requires very little turning to break the connection, it still remains almost totally screwed on.

Let us know how you like it when you receive it!

Thanks for the info. I already like the light, mostly because of the UI. It will also be my first light shining sideways. Can't wait till it arrives (well, I'm afraid regarding this I don't have much choice...)

I say, old chap, stop messing around with that poppy milk. For your health's sake!

The nice review surely needs some cleanup.

Yes there is, UF-H2 and UF-H2B

Found some parasitic drain figures in the Other Place.

4.38mA from an Eneloop, 20 days and it should be stone dead.

30 microamps for the H3 - about 9 years

Mine measures at around 75 microamps - or about 4 years.