There, just put the dji phantom original battery on a 12v dc charger to reboost the battery that just couldnt finish a proper charge.
Now it reads a full 12.7v after being on for 3min tops. Was getting a little warm.
Anyways, now I have 2 good batteries again, just one lousy drone that keeps going nuts in the air. ( I tie it to a string so it doesn't get too far away.)