Yurtdweller
Solar Enthusiast
Newly built 280ah pack. Due to bad solar weather, this is only the second time I've hit full capacity. Yesterday, I had a 'pack over voltage' cutoff. This was expected, due to difficulty programming the Ampinvt charge controller, since corrected(I think). The cc is reporting 100-ish watts off an 800 watt array, but the BMS is only allowing around 45 watts, and seems to be turning charging on and off rapidly (5x per minute) even though this is not indicated on the dashboard, only on 'reports' (see screen cap). Voltage test of full pack indicates 13.35. Voltage test at cc indicates 13.73. BMS seems to be limiting each cell to 3.41. Cells are well-balanced. BMS is jbd SP04S020A4S. My other pack(bought built) with Daly bms and running with a cc that could not be programmed properly regularly hit high voltage cutoff without issues. Should I try resetting the BMS?