Hello everyone,
I purchased 64 of the 60280 cells from battery hookup. I have them in an 8s8p configuration for 24v 440Ah with one BMS controlling the entire battery.
The issue I have is that the 5th cell in every pack of 8 charges and discharges faster than any of the other cells. So I thought to correct the issue I put a heltec balancer on each of the 8 packs to bring cell 5 to the voltage of all the other cells. After a couple of days I started losing cell 5 from some of the packs (2), what I mean by that is under a load the cell drops to 0 volts. I emailed battery hookup but that didn't really get me anywhere, they said they would forward the info to someone named David Paz and that he was answering technical questions for them. At this point I'm looking for any input that may help me get this issue corrected. I know battery hookup is a clearing house for used batteries but for the $2600 I spent with them I was hoping they would have some tech folks that could point me in the right direction. Is the 8s8p configuration the problem? Can the cells take charge and discharge at the same time?
Thanks!
I purchased 64 of the 60280 cells from battery hookup. I have them in an 8s8p configuration for 24v 440Ah with one BMS controlling the entire battery.
The issue I have is that the 5th cell in every pack of 8 charges and discharges faster than any of the other cells. So I thought to correct the issue I put a heltec balancer on each of the 8 packs to bring cell 5 to the voltage of all the other cells. After a couple of days I started losing cell 5 from some of the packs (2), what I mean by that is under a load the cell drops to 0 volts. I emailed battery hookup but that didn't really get me anywhere, they said they would forward the info to someone named David Paz and that he was answering technical questions for them. At this point I'm looking for any input that may help me get this issue corrected. I know battery hookup is a clearing house for used batteries but for the $2600 I spent with them I was hoping they would have some tech folks that could point me in the right direction. Is the 8s8p configuration the problem? Can the cells take charge and discharge at the same time?
Thanks!