I have multipluss 12/3000 connected to 2 x 230 Ah victron super cycle in parallel.
System is 3 weeks old. I suddenly noticed a voltage drop 2 weeks ago when someone was testing a vacuümcleaner on inverter. "Only" around 80 amps were drawn for few minutes and the voltage droppen until 11,89 Volts under load. Multipmus gave a short warning by red led status
Batteries were fully charged.
Totday again, batteries fully charged, a small test with watercooker and voltage droppen until 12,2 while taken 109 amps.
Is this normal? Batteries recover immediately after load stops.
Thanks in advance.
Please check date on image.