I currently have 2 CPAPs, a Resmed AirSense 10, that is a bit of a power hog, and an older Phillips Respironics System 1. The Respironics at one point got jammed up by sucking something, most likely cat hair, past the filter and into the impeller. Which imparted a smoky smell to the CPAP. I would like to get this CPAP cleaned up and refurbished assuming it is cost effective, so that I can have the unit more or less at the ready for travel. The 12v adapters for them are more reasonable price wise. Power use again, is fairly high. 6.67amps but that includes the humidifier etc... Let's boil this down to soup and nuts. I am looking for a CPAP solution that is travel / off grid friendly that won't break the bank. What is available?