My Victron MPPT 150/60 solar charge controller is fluctuation wildly. It seems to go from producing very little power to almost max power constantly. My system is a Multiplus II 3000 with 9 X CS 365W panels and the MPPT and Venus controller. I recently dumped 4 X 100amp lead acid batteries in favour of two RITAR 4.8KWH Lion batteries.
Although the RITAR batteries have BMS, when I plug a cable into the inverter, it does not like it.
I have sent mails to both the supplier and the battery manufacturer to resolve the BMS issue with no success.
Any ideas?