Our inverter doesn't seem to hold a charge anymore. We've only had this system for a couple of months. Everything was working perfectly. Out of nowhere we began to lose power in our RV in the middle of every night despite the SOC being very high and us using little electrical appliances during the night. The app shows the inverter is set to "off", despite trying to turn it on. Once the sun begins to rise, the app shows the inverter is still "off" while it is charging back up, and is usually at a super low voltage around 4-8V. After a few hours, it's up to around 13V, but then doesn't get much higher than that.
We have 3 lithium batteries connected that are fully charged. We see the inverter dies at night, and the app shows the low battery warning, yet the SOC is still very high (usually above 80%).
We believe the SOC trickles down to 80% because our lights are hardwired into the batteries.
We haven't had a problem for months up until now. We think it may have had to do with a recent software update. Also, we bought a space heater and used it in our outlets for a couple of days. We made sure our batteries didn't go below 70% while using it, just wanted to heat up the RV in the mornings. Sometimes, when using the heater, the power would cut out and then turn back on.
We've tried resetting everything to default, checking for updates, restarting the system - nothing works. Any help would be greatly appreciated.