I want to mod a light with 4x XHP70.2 leds and use this FET driver below, because the MT09R drivers are no longer available.
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I want to push the leds to 26+ amps at 6v using 8x 30Q batteries 2S4P. Will this driver do that ??
My concern is the leds will only draw 16amps.
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I have this driver and in the SRK with 4 xml it only draws 7A off 4 vtc6, so I think the Achilles heel of this driver is the old type FET. I do not know if you’ll get 26A out of it. Plus, the UI in line is wonky and doesn’t work great so I ended up swapping back in the old driver because it gives the same performance as this one. Did you try looking on AE for a driver? I found an MT03 driver that might work, but it’s for 3 emitters…MT03 Driver $45.00 | Haikelite MT03 driver Flashlight Drive Board Circuit board 8.4V 21000lm XHP70 MT03Circuit 淘宝网 - 淘！我喜欢 but holy smokes for the driver and shipping it’s $80! You could possibly try a Q8 driver?
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Thank You for that info ! :+1: The SRK is an option new to me and I may get one just for testing purposes.
The Haikelite MT03 driver is an option I may have to use, Thanks for finding that ‘Sirstinky’ 
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China stores are using DHL higher delivery rates due to late, damaged and lost packages. Sales will deminish over time. I have already canceled 2 projects due to shipping costs alone.
Is that 1s4p config?
That fet on the SRK V2 driver is the International Rectifier IRLR8726TRLPBF.
The datasheet is here: https://www.infineon.com/dgdl/irlr8726pbf.pdf?fileId=5546d462533600a40153567181dd26f7
It does not perform well at 1s voltages but according to the datasheet it should deliver ~100 amps at 4.5V gate voltage. The MCU feeds the gate the zener regulated voltage right? The zener mtn uses is a 4.7V zener, so yea, the fet should be capable of high amp delivery with 2s config.
Edit: Looks like the SRK V2 uses a 5V LDO, not a zener. The conclusion is the same.
The LED tests I see on BLF show the XHP70.2 hit the peak before 26 amps. More like 20A. I don’t think you’re going to get 26+ amps to each LED but that may be for the best.
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I want to drive 4 x XHP70.2 leds at 6 to 8 amps each. Do you think it will ? If so, I will purchase one and test it on my Bench Power Supply. It will be another water cooled light so heat is no problem at all. 
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Oh ok. With 2s4p config the driver should not have a problem giving them lots of current. With limited resistance in the circuit I bet 4x XHP70.2 would pull 60 amps or something on fresh cells. You’ll have to let us know!
if you have the skills you can make your own driver check my xph70 link and xhp50/srk link any question feel free to ask
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Nice Maglight mod ‘nmbusa’ !! And yes, I am starting to learn how to make a driver, but it will take time sinse I know nothing eletronically.
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Looking at this again, that FET will have ~.005 Ohm resistance nominal with 2S voltages. It would have a .15V, 4.5W loss at 30A, .3V, 18W loss at 60A. That’s a lot of heat to lose in the FET.
With some driver surgery, you know, slicing new gate / source pads out of the massive drain pad, then jumping them to the default g/s pads, you could mount a BSC009NE2LS5ATMA1 on there. That would have ~3W loss at 60A.