Zwy
Emperor Of Solar
I have one like that. Eventually it will balance but takes time. Last winter when I ran down between 5% and 20% for extended periods, it did the same on first recharge cycles at the top. Delta isn't as bad as that, top cells were at 3.50V while the stragler sat at 3.39V.That delta isn't a runner, it's a stragler.
Average cell voltage in the battery is 3.519v and the stragler is at 3.348v