Odd 12000xp behavior when coming off grid-charge to Solar/Battery mode.

clarktheshark · 2025-12-09T16:32:15Z

Latest firmware on all batteries. ceaa-0507 on 12000xp- I have 2 12000xp in parallel and 6 eg4 wallmount indoor batteries. - They are operating in communication mode for state of charge.- i have it set to charge from 20% to 60% SOC @10amp for each inverter.SOMETIMES, not all the time, BUT SOMETIMES when finishing the AC charge cycle ( i have it set to stop charging at 60% SOC), it will swap over to PV Off-Grid mode (basically wont charge my batteries) rather than the PV+BAT Off-Grid mode. I am able to force it out of PV-Off-grid mode by hitting the "start quick charge" button in the appThis is easier to visualize with the solar assistant chart. The end result is that I have to sit here and babysit this thing or i lose out on a bunch of PV power! please help!

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clarktheshark

(@clarktheshark)

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Joined: 8 months ago

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Topic starter January 17, 2026 4:23 pm

Ok I've installed both the latest rs485 and rs232 firmware on all 6 batteries.

Keep in mind that I did this process a month or so ago and didn't see any different results. Hoping this is the ticket! Will let you know if it fixes it.

I've noticed the time is different on the two new inverters I bought. Would that have any effect on things?

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Odd 12000xp behavior when coming off grid-charge to Solar/Battery mode.

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