Hello everyone.
I searched a lot in various forums, but it seems I wasn't able to find a situation similar to mine.
I have a system with 4 lifepo4 cells, 280 AH, bought on AliExpress 1 year ago. I have a PEYO BMS which is a DALY clone.
I updated the firmware to version 210629.
Initially to balance the cells, as I don't have a suitable home charger, I left them connected in parallel for various weeks.
I also installed an active balancer.
The issue I am facing is the following.
One of the cells shows an important difference from the other cells when charging and discharging.
Here some examples:
In a moment the BMS triggered the cell protection set at 2.50 volt.
The strange thing is that few moments before, the cell was around the same voltage of the other 3, and so it did after sometime, going back to a similar voltage:
Finally, when I enabled the charger:
The BMS was triggering the overcurrent protection, so I set the voltage to 4.00 temporary.
I suspect my cell is broken, but i would like to know if anyone has some better idea.
Thanks!
I searched a lot in various forums, but it seems I wasn't able to find a situation similar to mine.
I have a system with 4 lifepo4 cells, 280 AH, bought on AliExpress 1 year ago. I have a PEYO BMS which is a DALY clone.
I updated the firmware to version 210629.
Initially to balance the cells, as I don't have a suitable home charger, I left them connected in parallel for various weeks.
I also installed an active balancer.
The issue I am facing is the following.
One of the cells shows an important difference from the other cells when charging and discharging.
Here some examples:
In a moment the BMS triggered the cell protection set at 2.50 volt.
The strange thing is that few moments before, the cell was around the same voltage of the other 3, and so it did after sometime, going back to a similar voltage:
Finally, when I enabled the charger:
The BMS was triggering the overcurrent protection, so I set the voltage to 4.00 temporary.
I suspect my cell is broken, but i would like to know if anyone has some better idea.
Thanks!