Correct and I realize that, but I said 750mA due to, Li cells having a certain "C" rating which in RC cars indicates roughly a peak current draw, so in the case of a 10440, lets say it has 350mAh and a 3C discharge rating ( Iknow i said 2 C in the previous post, but I realize I made a wrong guess at 2C which would have been 700mA not 750mA) anyways you take the 350mAh X 3 =1150mAh, however keep in mind that, that rating is generaly refered to as a 3sec or 10sec burst otherwise the battery will burst but still only at 7.4v but for long runtimes you'd most likely be stuck with 350mAh at 7.4v could stick a buck converter in there to hold the voltage at 6V and you may be able to get 400mAh out of them, but in the interest of a small host I think a 445nm @ 500mW would be good for a practicle yet portaqble burning laser, I mean honestly I know if I wanted an all mighty portable powerhouse I'd just buy a 6D mag-lite, use a buck converter to get some extra Ah out of the batteries and get a very custom heatsink/head that would hold 5 or more 445, use some first surface mirrors and a g1 lens at the end, and basicly have a baseball bat that if I miss you with it physicaly the laser will cut you in half ( over exagerating).