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Under the same load the inverter display reads 12.6V and with a multimeter at the battery terminals I was reading 13.11V. Prior to applying the load the battery was reading 13.6 on the inverter display (I forgot to use multimeter prior, but without a load the inverter display should be pretty...

What kind of air conditioner? That will change the problem a lot. Standard home AC units use a lot of power, I doubt its possible without an expensive set up. Smaller room AC units it may be possible. How much power do you need?

The voltage reading is what the inverter display is showing as battery voltage. The inverter is hooked directly to the battery terminals.

I didn't do a long pull on the battery yesterday but.... After being fully charge on shore power the battery was reading 13.4V off of the inverter display. I turned on the 820 watt load and saw the battery voltage drop to 12.6V with the load applied. Ran the load for about 20 minutes and took...

Scratch that, it's gonna be cloudy for three days in a row here in AZ. Gonna charge with the wall power charger and see if the behavior is different.

Would it hit 10 or 10.5 volts at bms under load and then when load is removed the battery would read 12.6? I will let you know what goes in to it after it is charged via solar. I also picked up a 5amp charger, after the solar/renogy record what gets put in I may hook it up to hard power and see...

Thank you. Great feedback. I appreciate it. The 820 watts was read off of the output of my inverter. And I do know my device was commanding 6-7 amps at 120v. I guess I am assuming the battery is balanced, it is a brand new, unused battery. I charged it with my solar after install and the...

The battery was fully charged and balanced.

My last comment only spoke in watts and watt hours. I didn't say amp hours. And I did say the battery voltage. Are you drunk?

So an update - I now have a 1500wh lifepo 12v battery installed in the same setup. I ran an 820 watt load for about just shy of an hour and the bms shut off the discharge. How much efficiency loss is happening? I thought it would run an 820 watt load for close to an hour and a half, not...

So based on that relay and its terminal numbering, I should be wired like this?

Something like this?

Do you have a wiring example of using the load terminals? I would have to hook my inverter up to the load terminals? I thought I read in the manual to never do that. Am I misunderstanding?

Yup. Got it. Makes sense.

Yes it was consuming at about 1000w. Yeah I think part of my problem was pulling too hard on the small battery.

It is a Renogy Rover 20 amp MPPT Controller. It does have the load ports, but I am not sure how to use them.

12v Lithium battery, dropped below ~11.0v. Not sure about the voltage after load removal. I ran a high load on the 10Ah battery for about 7 minutes or so and then the inverter clicked off. The solar controller then went in to a slow charge recovery mode and charged the battery like that until...

Hi Guys, New here. Details of my setup are in the signature. But I overdischarged my battery this weekend. My inverter has overdischarge prevention but it still took it too low. Is there any other method to prevent overdischarge? I think I was consuming too fast (about 1000w) and my 10Ah...