Notifications
Clear all
Topic starter
December 9, 2025 4:32 pm
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 app
This 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!
This topic was modified 3 weeks ago 3 times by clarktheshark
Topic starter
December 9, 2025 4:44 pm
I do notice that the Batt Status goes to "2". unsure of why the batteries are affected by it swapping over.
Topic starter
December 9, 2025 5:01 pm
On second look, This appears to be a battery communication issue. Any ideas as to what is causing that? It appears to happen when PV is really charging big time.
I wonder if interference or something on the CAN ethernet wires? anyone had that happen before?
Topic starter
December 9, 2025 7:14 pm
The inverters are set to LITHIUM 0 (these are 12000xps, there isnt an option for eg4)
The batteries are set to EG4/Lux
@eg4eric I checked every battery. they are all dipswitched correctly 1 through 6.
They are all on the latest, correct firmwares (thank yall for sending the required cables to update!)
Again, 99.9% of the time, the communication is perfect. Sometimes it drops out and it seems to happen when the solar energy is really pumping.
Topic starter
December 11, 2025 3:16 am
Wait... I had it set to Option 0 for standard.
But you are saying it should be set to Option 1 HinaESS? Why is it not called EG4? Lol.
I'll leave it at option 1and see if If that has fixed it... Thanks.
This post was modified 3 weeks ago 2 times by clarktheshark
Topic starter
December 12, 2025 9:18 pm
Ok new weird stuff happened today:
At 1038 it goes into pv batt/ac charge mode without any input from me.
Then at 11:03 it goes into that same PV Off-Grid mode.
it only recovered because I cycled both units.
---------------------------------------------------------------
I did notice that the battery communication cable was connected to the slave, so possibly that has something to do with it? Going to continue to monitor. really would like to see some logs on this. It should log and say why it's changing operating states!
If anyone has ideas, let me know.
This post was modified 3 weeks ago 2 times by clarktheshark
December 16, 2025 6:50 pm
@clarktheshark Yes, 1 is correct. That is the correct protocol. Also, having the master battery communicate with the slave inverter can definitely cause issues. I recommend updating the firmware on all the batteries. Both the RS485 and also the RS232.
EG4® WallMount Indoor 280Ah Lithium Battery - EG4 Electronics
Topic starter
December 16, 2025 9:25 pm
Check: Batteries have latest firmware for both rs232 and rs485.
No issues since I swapped the battery comms from the slave inverter to the master inverter. (4 days trouble free).
Topic starter
December 19, 2025 5:28 pm
Well, it happened today. battery charging stopped for 10 minutes almost exactly at 11am. This time it recovered by itself without any intervention. what could be causing this?
Topic starter
December 19, 2025 6:04 pm
The only thing i notice thats different on the data logging is that the BATSTAT goes to 2 vs 3 when it goes into these ~10 minute periods of not working. (always during high solar output)
I cant find any documentation on what that means.
This post was modified 2 weeks ago 2 times by clarktheshark
December 22, 2025 10:31 pm
Are all the batteries updated with the latest firmware? You can check by using BMS Tools Software
We don't have any documentation on that; however, we have had this issue before and updating the firmware on all the batteries to the latest firmware resolved the issue.
Can you possibly share pictures on how the batteries are connected and how the Master battery is connected to the Master inverter?
