Kibim

Why have one, when for the same price you can have 2?
reliability. One fails in a 2 battery setup, you can still limp along. 1 battery, 1 failure and you're dead in the water. 

Thanks Zsde, but i was never able to connect to RS232A on the device. It's a special cable, and serial to usb converter. As such, i was never able to change the battery protocol. 
I needed a dsub-9 to rj11, and i don't have either end at home, but the serial to pi, and pi to ICC option at least i had all the parts. 
 

Renier, no, the inverter and the battery seem to speak past eachother. 
I have an ICC installation on a raspberry pi which speaks to both, so i can monitor battery and inverter using the same online portal, works rather well. 
https://iccsoftware.co.za/
I had to get a serial to USB converter for the battery to pi connection. 
This is similar to the way the hubble BMS setup works. 

Are you using the same Axpert now? 
Perhaps place a pic of the sticker on the side of the inverter as well as the specs of the older and new panels. 

Why have one, when for the same price you can have 2?
reliability. One fails in a 2 battery setup, you can still limp along. 1 battery, 1 failure and you're dead in the water. 

Why have one, when for the same price you can have 2?
reliability. One fails in a 2 battery setup, you can still limp along. 1 battery, 1 failure and you're dead in the water. 

Why have one, when for the same price you can have 2?
reliability. One fails in a 2 battery setup, you can still limp along. 1 battery, 1 failure and you're dead in the water.