So I have so far avoided running out of battery power – my house has literally only been without power when somebody (usually Jaco) does electrical work.
But today I’ve had a power outage and with the weather in Gauteng what it has been the last two weeks, I started thinking that I probably should have plans if I do run out of battery power – especially since it will likely happen at 2:00 AM.
So couple of questions:
Should I look at an option to hook up my old generator (a 5.5 kVa Ryobi) to the system and use it to charge the batteries? I have a Victron Multiplus 1 5000 Va with 3x Pylontech US3000’s. Ive read this MultiPlus Generator FAQ [Victron Energy] briefly, so I doubt my generator is of high enough quality to charge the batteries at full amps. And of course, it is not connected at the moment at all.
At what point should I just shut down the whole system? 10% SOC? I usually let the Pylontechs go down to no more than 25% or 30%. I seem to recall that they will shut down by themselves at 8% but it sounds like a better plan to shut it down in a controlled fashion.
What should I shut down? Just turn off the inverter on the front panel and let the batteries sit idle but continue running the VenusGX? And when the sun do start charging the batteries again, do I just turn on the inverter again (say at 20% SOC)?
Do I switch back to Eskom for the time being or keep everything on the inverter until I either know the power is back on, or until the batteries have sufficient charge again? I have non-essentials showing me when Eskom is back on (oven clock).