This charges a javelin. what we re not seeing here are four ordinary motorcycle batteries. they would be attached to this end. the brain of the javelin missile system, the command launch unit, is supposed to be powered by a very nice, nonrechargeable paired battery system. that small green battery delivers enough power to rit fo four hours or to launch two to four missiles using that launch unit. when we got in country, the marine units that we were working with had one green battery with a clue and three missiles. that meant they could maybe use that for four hours or they could fire their missiles. they could never turn the clue on to train on with it. we had to get them some way to power it up, and we were not able anywhere in country to find more batteries.