View attachment 7946905I've got a small trailer mounted solar / LiFePo4 battery bank / inverter system to keep critical systems running at my folks house. Their refrigerator, freezer, and oxygen concentrator are hooked up through it. The inverter acts as a transfer switch if mains power is lost. Through testing - the system can run these small-draw items forever if the sun comes out during the day. It will run it all on battery for 60-72 hours if no sun at all.
If needed, a small Honda 2000w generator can recharge the batteries or run the load if a failure occurred with the system.
It's mainly about keeping the oxygen concentrator functioning though...