Thanks for your elaborating on what's involved. I am considering a 12Kxp but concerned at the moment about using a different vendors battery.

@billmag Thank you for bringing this to our attention, and I apologize for the inconvenience. I checked several inverters with previous firmware versi...

... if you are shopping for a transfer switch, spend the extra money and buy the GE model. The cheaper Amazon models you will find are not UL listed a...

No. My system is a whole-house backup configuration. Main disconnect and transfer switch are before the 18Kpv. Main dist panel is after the 18K. G-N b...

@jlankford will the transfer switch need to also transfer the neutral and ground? Main panel is bonded before the inverter and dist panel after invert...

I had to come back quickly, I found that each box the batteries came in has a sticker of the SN. DD

@Jared I also asked to verify my registration to confirm the numbers. However, after 2 months, I have received no reply on this forum.

What is the station name or inverter's serial number?

Yes, we do offer an ethernet dongle.Ethernet Adapter - EG4 Electronics

Did you update the LCD firmware as well?

You can find the working modes in section 12.3 of the manual. The link is attached below. EG4-12000XP-Manual.pdf

@highstone That's correct! each inverter will handle its own battery but both inverters' will still work together to power the loads.