badger6724 wrote:
I think around 12.3 or there about. It was a while ago. Last year.
No..what I was asking was what the voltage after you turned off you inverter running that heater. You only ran it for 5 minutes. so you only pulled around 10AH. Assuming you have 200AH batteries, you only discharged them 5%. They should be at 12.5.
A better test is to fully charge the battery and then run the inverter with the heater for 15 minutes and see where the battery voltage ends up at after the inverter is off for a couple minutes at the end of the test.