The Death of a Battery?
I went to charge up one of my 2S lipo batteries for a fun romp with my old Tamiya TA02 rally car. When I connected it to the charger (a cheap Duratrax Onyx 150), it started beeping wildly, indicating the battery was not charging. I tested the voltage of the battery to find it was at 4.9V!!
So there are two questions here:
1. What could have caused the battery's voltage to drop so low? It had been stored at room temperature for around two months and around 7.2V.
2. Is there any way to revive the battery? I tried charging it at 1A, 3A, and 5A with no success. It's not puffed. Would attempting a charge without the balancer plug work?