I resantly bought 2 Traxxas 5000mAh LiPo's and the 1st cell on both are acting weird. I use them after break-in plug them into my balance charger and almost instantly the first cell is at 4.20v while the other 2 take there sweet time to catch up. Its both batteries but one more than the other. Just last night the voltage on all cells started going up and down 1st cell jumping anywhere between 3.85v to 4.35v the other 2 cells between 4.05v to 4.15v! I called Traxxas they said to test them on another charger or send them in. Don't know what to do, Please Help!!! My charger is a Venom Pro Charger!!