C-Bears X 2
Yes, My very reason for determining how your make & model of CPAP can be used. Your options for overnight stays improve drastically if you can run from DC. Your other option is an Inverter (pure sine) as a last resort. If you run off of the House batteries, & not a "dedicated" battery, get a cheap multimeter & monitor the system. Do not depend upon the coach monitor telling you the Batts are good. If your converter/charging system is functioning correctly you should have no problem with DC power supply through the night. The batteries will get charged enough during daytime driving.
Happy Trails :B