1. adergotardo

    Is it safe? Dead cell come back

    Hello, everyone. I got a Zippy Battery, 25c 2200mAH, 3Cell. One of the cells are vitually dead (3,69V; 4,20V and 0,26V). So I found this video (in Portuguese, because I'm a Brazilian) where a guy teach to recover a dead cell using other battery. He put those together and let the cells balance...