The system consists of 6.6Kw of solar connected to froinus 5Kw grid inverter which is on the output of a Multi Plus II GX. The batteries are 2x Byd LV Flex5 and 1x BMU. The system is off-grid.
The problem is that the CCL(charge current limit) is set to 26.8 amps when the battery temperature is 15degC or below. The manual states charge derating occurs between -10 and +5degC. The firmware verisons for the battery are BMU 1.22, BMS 1.13 and parameter table 1.4. Does anybody have LV Flex5 batteries with this issue?