XHP35 is a 12v emitter. Your best bet is to run the SST-40 FETDD driver for the out put you seek, 2500lms. I have another L2 running 2S 26650 and a XHP50 @ 9amps, that is really sweet! Nice blend of throw and flood and nice tint a XHP50 J4-1D.
Have you checked out the L2/L6 modding thread.might get some info that will help….Convoy L2/L6 modding thread