I let my batteries run down below 10% last night for the first time. Overnight the 'Battery state of charge' alarm triggered which I'd expected and this has happened lots of times before. The only difference this time was the batteries went down to about 8% and about 45V.
At 00:30 the unit is switched to 'Keep batteries Charged' which I do each night to charge with cheap electric, however it refused to charge. I tried all sorts this morning, checking all the voltage thresholds I could find in the system but nothing would persuade it to charge. Eventually, the external MPPT controllers charger the batteries to over 48V but it still has the alarm and won't charge. Eventually I power cycled the RS and it immediately started charging and the alarm cleared?!
I'm running version 1.11 firmware on the RS and the Cerbo GX is on 3.00~14. oh, I also have a smart shunt that the GX uses for battery monitoring rather than using the RS. I also don't have a BMS connected to the GX as they don't have external contacts (Eco-Worthy 12V 100Ah).
Any suggestions what caused this? Obviously I think the trigger was allowing the batteries to go below 10% but I'm worried this may happen again one day and I'll be left with flat batteries on the morning. The obvious candidate is a bug but I'm open to suggestions.
