I use LiFePO4 Deep Cycle Battery 12V 100Ah and hooked up the TV and cable for a night. It went down about 40%. Then after I stopped using it, the Epever battery showed full.
Thanks for your response. I use the Lifepo4 Deep Cycle Battery 12V 100 Ah. That's exactly what I was thinking, too. But didn't know if the Epever was faulty or not. This has been a big help.
I have the classic 400 watt system using the recommended Epever 40amp MPPT tracer BN. In the daytime while charging the battery display seems to work fine. But at night, when I am using it, it does show discharge but when I'm through, it goes back to full. Do I need a battery monitor, or is...