I charged up from about 50% to 100% via solar on XT60 connection. Took a couple days due to overcast and only 380W(2 x 180) of panels. Ran a heater off of AC at about 600W and was happy to see over 3 hours of runtime. That quickly went down and it ran about 1.5hrs. at 17% it said 22min and then within 30sec it went to zero and turned off.
As of now I'm looking at less than 66% AC efficiency???
