This is my first run in with a battery acting funny. I have a new Traxxas 2S 5000 mah that came out of the box balanced within .01 volts, first charge quickly showed cell 2 going up .5 volts and the charge timed out before getting better. I thought it was odd, so I swapped to another channel and started a new balance charge with another balance board, but it also just hung in that same mid charge condition.
So I switched to a storage charge (discharge at this point) and then back to a balance charge. I've now cycled this 4 times today and yet it is still off and hanging at 3.8 and 3.9 volts. It's getting closer, but the charge is hanging due to what I think it's the charger trying to find a way to gain balance.
Should I keep going tomorrow evening and cycle it up and down a couple more times, or is this a bad new pack? I've used a total of 2 separate and unique banks on a 4 bank charger and one totally different Onyx 245 and the condition moves from charger to charger. Also, 3 separate balance boards have been used to eliminate the boards as being a cause.
Sent from a Galaxy S3, far....far away.