Originally Posted by
streamliner
I have tried charging with balancer plugged in and not plugged in.
I bought a voltage tester and noticed my two good charges brought the batteries to 9.3 volts, this seems high??
That is not right, the battery should be charged arround 8.40v, some do a little bit more but 8.44 is the max.
Time to send the charger for repairs if you are sure it is set to 2S-4.2v/cell.