lol Yeah, you shouldn't run out of juice anytime soon with that big batter. I run 9.6V 3800 mAh batteries in my M15 rifle and my HK 416. And those things go forever between charges. Good thing they last so damn long, because I can't change them in the field. They're so big I have to completely remove the buttplate on my full stock in order to get them in or out of the guns. I normally just open the door on the butt plate and charge the batteries right in the guns.