Question for knowledgeable solar experts

Some things you must do when boondocking. 1. Make sure fridge is on propane only, not electric and not automatic. 2. Make sure your water heater is on propane only, not electric. 3. If whole house inverter, make sure your converter in off. Is it possible your inverter is truly whole house and was feeding your converter charger? This will cause un-perpetual motion! Inverter powers converter-charges batteries-batteries power inverter and it goes around and around until your batteries die.

Also, look at your CPAP bottom or back and give us the electrical specifications. Voltage?, AC?, Does it plug into well? with what? a cord or a power supply? Or just give us the model of the CPAP and we'll look it up.