So after a month of using my powerwall with 86 kWh 280 ah xuba cells, the darker days are coming.
Until now with enough sun to always have the battery charged to the upper regio's, the cells performed good. Big powerdraw from the cells if neccesary is not a problem.
However, as the sun is more and more fading, the cells are starting to occasionaly get in the lower regions of voltage. And at the lower voltages, they start drift quite a lot. The bms cuts the power when the cell with lowest voltage hits 2.8, and the shunt data indicates there is still 37 % power left in de battery.
Price of the cells is good, but this a little (?) downside. I will now power the pack to full 100 % and let everything balance before using again, and will come back on the future numbers.
Until now with enough sun to always have the battery charged to the upper regio's, the cells performed good. Big powerdraw from the cells if neccesary is not a problem.
However, as the sun is more and more fading, the cells are starting to occasionaly get in the lower regions of voltage. And at the lower voltages, they start drift quite a lot. The bms cuts the power when the cell with lowest voltage hits 2.8, and the shunt data indicates there is still 37 % power left in de battery.
Price of the cells is good, but this a little (?) downside. I will now power the pack to full 100 % and let everything balance before using again, and will come back on the future numbers.