I have a ip lipo 4000, 25c for about 3 months, last night before I play, I read S1 has zero volt! S2 has 7.78V!!!! Any brother has experience about this? Most importantly, can this battery be fixed or should I dispose it?
I disassumbled the battery and found that one of the balancing wire were loosen. Both red and black are good=> that is why total voltage is showing 7.7V. The blue wire was detached from the battery, the battery is back in action after some soldering. The only thing to do is to glue to casing back together.