Recent content by akorchuk

I've found the issue. It's the poor quality connections between the batteries. I have 70mv voltage drop on one connection of the Cell1 and 35mV on Cell2 when current is 70A. All other connections have about 10mV drops. I'm using busbars received with the cells but they sent only 4 of them and I...

I didn't make the capacity test because I don't have the electronic load. The only test I made was full charge/discharge cycle to calibrate the BMS. I did only IR measurements and they looked good - all the cells were at 0.20mOms and exactly the same voltage. So I decided that cells are ok and...

Second chart is similar to to the first one, but the difference is when I turned charger off. On first picture it was On up to the red line and all cells were balanced during this time. On the second picture I turned charger Off at the middle of the "running curve". This caused all cells voltage...

Hi community! I've ordered 4 pcs LF280 Grade A Cells from Docan Tech (based on forum info). It arrived with exact the same voltage of 3.290V and IR = 0.20mOm. I'm using 200A JK BMS B2A8S20P (2A balance charge) and a Heltec 10A Active balancer + 38A CC/CV AC/DC power supply for charging. I've...