LiPo Cells Unbalanced

[pescador]

A silly question perhaps, but what mode do you set the charger on when charging? Is it BALANCE mode?
The internal balancer is only activated in the BALANCE mode.
It does not operate in the CHARGE, STORAGE or FAST mode.
Just a thought.
Paul.

Silly question maybe but I went from a charger with an external balancer to one with it built in I was charging but I didn't realize I wasn't balancing.

It's all good now.
Thanks

[domp444]

Well, after trying to get the battery balanced numerous times, I've decided it's not worth it. It'll discharge, and get pretty close, but when I try to charge it one cell still stops at 3.84.

If anyone wants it I'll sell it to them, maybe you know what to do with it. Thanks for all the help guys!

[DISAR]

I have a similar issue with same battery 2s, Turnigy 40c. One cell was 4.2 the other 4.0, charged-discharged but still was a difference I finally run the battery on 4s1p and no problems. Then used the store mode and finally the charger balanced the two cells at 3.85 volts each. I think this happens from long time storage without actually running the battery even if stored at 3.8-3.9 volts/cell initially. I read also somewhere that every 1month it is good to charge-discharge or better run the batteries

[domp444]

So I should just pop the battery in my SV27 along with the good one and go for a run? I was thinking of doing that but wasn't too sure. I guess I'll have to try that next weekend when I get down to the pond. And yes I heard of that also, during the winter I'll probably have to do that. But this battery did not sit for long, maybe about a month, so I don't think it was that. Thanks!

[domp444]

Alright, I finally decided to re-examine this poorly balanced LiPo pack, and so I hooked it up to my iCharger and let it sit there. It took about 10 hours, at about .20amps (which the charger decides on by itself, haha), but now both cells have gone up to 4.20. I am now discharging the pack to make sure the cells discharge properly, and so far so good: 4.17 / 4.16. They are discharging at 1.7a. I put in 3a discharge but the charger will only go up to 1.7 as a safety precaution I assume. I hope I can use the pack now!