Hello everybody! Here another puzzle for lead batts addicts!
In my offgrid mountain house, managed by Victron, my 30kWh/24V OPZS batts are at -4°C (outside -12°C). This morning the voltage suddenly fell from 22.4 to 20.2Volts triggering an alert. Apparenlly everything is working well: inverter, CCGX and VRM, Modemrouter with a constant load of 112W (5A) . For the last 20 days, I never reached SOC=100% but il never went under 80%
My explanation is a bad measure of the voltage, due to a bad contact, due to the low temperature. So "Wait and see".
Anyway, with so old (?) batts I am prepared to buy a new set, but that would be when the snow has thawed (May?)
Anyone with a better understanding?