The 18K spec states it can handle up to a 4,000 watt line imbalance. So it would be worth looking at this further to see if the Eaton UPS load along w...

How is it straightened out? Did he already make a wiring change not noted here? He needs at minimum an interlock added as I described above. Preventin...

@mylesj You need the electrician to make a change to your wiring. Joel is correct. It should never be possible to have a feedback loop as Joel ha...

@mylesj @joel-brodeur I've scanned back through this thread... I don't see any mention of trying to change to voltage control for charging. Have y...

@joel-brodeur My LL-S batteries are all v2.18. Working fine. What was the cause of the flickering? Did I miss it in this thread? Does he have a l...

@joel-brodeur Yes, if you run the inverter open loop with voltage control, then you could run the Chargeverter with closed loop and SOC setpoints t...

@mylesj That cheaper charger should work just fine. But note that it's only a 1,000 watt charger. It will take approximately 10 hours to charge you...

@joel-brodeur That theory makes sense, if his system is wired that way. Would need to see a wiring diagram of his system to know. Don't know if he ...

@joel-brodeur He's using this inverter like it was a backup generator - he's plugging the output into a TS where a generator input would go. I pres...

@joel-brodeur Honestly, I have no idea. I had assumed that the transfer switch that generator cord is plugged into is just a manual double pole dou...

@joel-brodeur Well, OK. That's weird but if that's how the product works, so be it. What you just explained is consistent with all the photos &...

@mylesj Sounds good. If you don't own a meter yourself, you should invest in an inexpensive one that will measure AC and DC volts, and resistance (...

What does the data history show as the load output when it happened?

@mylesj Let us know here what you finally resolve as the charging problem. Have you measured the grid input at the inverter with a meter?

@mylesj FYI, be aware that your SOC is not going to be accurate now until you get a full 100% charge on these batteries. Your SOC is currently abou...