content: Seems ok at first, charged fine as advertised. Used it 3 times in the first day i had it charged (lucky timing!) and the negative terminal connector flew apart each time. Had to reassemble each time and it still is shakey. Very frustrating in that attaching to anything of any size causes it to self-destruct. Now I've taken to just holding it on to something a la a defribulator and hoping for the best. Would not buy again.