We both have cpaps. We bought a 25 foot extension cord and a long block short extension cord (the kind with 4 or 5 outlets. We plug into our inverter outlet and run it into the bedroom where we both plug in our cpaps. We turn on the inverter at night. In the morning the inverter reads 50%. We need to recharge the inverter during the day (run the generator) and it is ready for the next night.