Joel007799
New Member
- Joined
- Jan 13, 2022
- Messages
- 24
Hi everyone. My name is Joel and im actually from sweden. My post might not be ok becouse my lifepo4 cells are not for solarpanel. They are actually for a car sound system. So the problem:
I did get some lifepo4 cells last summer (2021). its 4 cells and they are 300ah cells. When i got them the Voltage was
1: 3,33
2: 3,33
3: 3,29
4: 3,39
So i decided to top balance them. I connected them in paralell and started to charge with 3A and set the voltage to stop att 3,65. So a few days later when they were done they all where att 3,63 and one at 3,64 now this cell that is att 3,64 is a big problem. When i then took them of carging and put them in series and put my bms on i started to charge them with regular 12V charger. Then when i reached 14,6 on the terminals i disconnected the charger and 3 cells where at 3,65 and one at 3,66. Now the problem, a few days later the cells are at:
1: 3,44
2: 3,44
3: 3,58
4: 3,39
Is 1 cell bad or what is going on? Im going to use this batterypack in my car as the car battery and to use this battery for my amplifyers. My alternator on the car is a 100A and maximum voltage on my alternator is about 14,3-14,4.
I hope someone has some answers becouse i dont know whats wrong.
// Joel from sweden
I did get some lifepo4 cells last summer (2021). its 4 cells and they are 300ah cells. When i got them the Voltage was
1: 3,33
2: 3,33
3: 3,29
4: 3,39
So i decided to top balance them. I connected them in paralell and started to charge with 3A and set the voltage to stop att 3,65. So a few days later when they were done they all where att 3,63 and one at 3,64 now this cell that is att 3,64 is a big problem. When i then took them of carging and put them in series and put my bms on i started to charge them with regular 12V charger. Then when i reached 14,6 on the terminals i disconnected the charger and 3 cells where at 3,65 and one at 3,66. Now the problem, a few days later the cells are at:
1: 3,44
2: 3,44
3: 3,58
4: 3,39
Is 1 cell bad or what is going on? Im going to use this batterypack in my car as the car battery and to use this battery for my amplifyers. My alternator on the car is a 100A and maximum voltage on my alternator is about 14,3-14,4.
I hope someone has some answers becouse i dont know whats wrong.
// Joel from sweden