When I charge the AC200P with solar panels, the charge indicator sometimes jumps from approx. 80% to 100%. Is there any firmware update to prevent these behaviour?
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@Jim2000 I’m sorry AC200P does not support the APP function, so there is no firmware update to solve it. For this problem, please completely drain the battery until it automatically shuts down, and then charge it with AC until it is fully charged and automatically shuts down.
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Sound like the bms reeds recalibrated. Charge to 100% then drain at steady rate with a heater for example until it shuts down then charge to 100% you should be good to go after that.
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