Is a LIPO with one dead cell usable?
Bought a 4-cell lipo from a fellow RC tech user and one of the cells is at 0V. The dead cell is on the end and swollen. A lipo cell checker confirms three cells at 4V and the last at 0V. Voltage at the battery plug is at 12V. Assumed that is is not safe to use since I received it that way for over two months now and had not used it. I came across a sale post here on the forum that the user is using a lipo in this condition for over 20 cycles. So I'd like to hear some opinions on this subject. Thanks