larrylwill
New Member
- Joined
- Aug 22, 2021
- Messages
- 92
I built a 4s battery and top balanced the cells. After several problems I started to use it in my Motor home. The BMS is only 150a but the battery is 280Amp so I have to charge through a Renology 60 Amp DC2DC charger. The battery has been kept at 80% untill I started driving, I have the BMS set to 3.6v for the cells and 14.5v for the pack.when I get near full charge I get 3.493, 3.435, 3.554, 3.560 which is 125ma difference. (Readings taken after charge shut down). The pack shows 14.04v Somewhere around there the BMS shuts down charging due to overvoltage cell (blutooth monitor). The monitor shows the battery at 280A capacity.
After sitting a day I get pack at 13.3, cells at 3.328, 3.323, 3.328,3.327 and 0.004 difference.
Should I rebalance, or just let it alone?
After sitting a day I get pack at 13.3, cells at 3.328, 3.323, 3.328,3.327 and 0.004 difference.
Should I rebalance, or just let it alone?