I think I heard it uses a lame proprietary battery... not sure if that ruins its potential or not, but I'm not sure there would be much purpose in modding it due to heat problems... even if he could pump 4,000 out of it, it would last mere seconds if that before you char-grill your hand or oven mitt. Most people who buy headlamps are doing so for the versatility during actual work uses... incredibly rare would it be to need 2k+ lumens for a close up work task.
... But I could be very wrong. Anyways WHERE THE POCKET ROCKET THROWERS ATTTTT????? We need some 1-2k lumen 18650 throwers around or smaller than the size of the Nitecore MH20GT blasting out 100k LUX!!! I need to shock my friends with insane sky lightsaberness in ultra compact package so they can be baffled as to how its even remotely possible!!!