I just did a review of the brand new Goal Zero Lithium Yeti 1400. What do you think?
I've had a CPAP for close to 15 years now and finally found a good option for camping and battery backup. There was some cost involved, but I can charge it via solar, meaning I can go out on extended trips (I love it). Here's a video I posted about it: https://www.youtube.com/watch?v=0TLDKqjQS6E