0K. Two different versions. I believe the only significant difference between the two probably is the current sense resistor stack value, which determines the output current. Of course, in theory this means one could connect the 2.5A version to a 3-4S emitter board. This includes “12V” XHP50/XHP70 boards, XHP35s ofc, and… triples. Maybe we should ask Kaidomain to get a small batch of in-series 3535 triple copper boards, and mount on them a few 219Cs/219Bs/XP-Ls/etc.
This would push up the power output up to ≈25W, so I would not be surprised if it would dare to draw ≈9A from the battery (high drain cells advisable).
Well, there's little info on this, so just speculating.
I should point out, though, that further test may be required. He feds the driver with 4.2V of input, something which is a never met, easier to handle condition for the driver. For me, the stuff has to deliver in real world “worst case” scenario conditions. Between low SoC, battery internal resistance and other losses, I'd test it with a 3.1V input, namely to take a good peek at input current handling and efficiency.
I just bought a Ultrafire F13 which is about as big as a C8, but uses a 26650 battery. It has room for a 22mm driver and uses a 20mm star.
I’ve got an xhp70 and an xhp50.2 on 20mm stars to try out in it. I’ve also got a OP C8 reflector that might work in it.
I’m wondering if I should buy that H1-A driver to run the above 2 emitters at 3 amp (2,000 to 2,500 lumen) or run a pair of 26350 batteries with a more common fet driver (2,500+ lumen).
I don’t know if the H1-A has memory and that’s important to me. I’m gonna wait a couple of days and see if kaidomain answers my email about it.
JasonWW, the overheat problem is as follows: 3+A of current over a 2S emitter, which is about twice the power on the emitter board vs a more usual XM-L2/XP-L at that same current, besides driver and other losses.
There's probably little to no issue on a big torch, but if you try it on an SK98 clone, you'll know what it means.
Okay, you mean emitter heat. I thought maybe the driver had overheating issues.
I’m not worried about emitter heat. I use my lights for security work where the longest turbo mode is maybe 30 seconds. Heat has never been an issue. Plus the F13 is a bigger than normal host.
If the H1-A just doesn’t function like I want, I can probably run 2 26350 batteries and use a fet driver for 6 volt. I’m not real fond of TIR lenses.
I wonder which is better with a xhp emitter?
Boost driver with not so great UI and 5000mah liitokala or
Normal fet with great UI and a pair of 2000mah 26350.
Slightly off topic, as far as I can recall, Kai from KD and owner of DX (can’t remember name) used to run one site together, but they split up to KD and DX.
I remember that I read once on CPF that Kai is flashoholic too
