I have a Puritan-Bennett GoodKnight 420G from
cpap.com and a 16aH 14.8V Li-Ion battery pack from
batteryspace.com. The battery pack weighs about 3 lb. The whole rig adds about 5 lb to my backpack but the extra energy from a good night's sleep is worth it, IMHO.
I get 3 full nights out of my pack and might get 4 before I have to find a way to charge it. Results will vary depending on your pressure setting. Of course, I don't use a humidifier when I'm camping so that helps extend the battery life dramatically.
CPAP.com has similar battery packs and they had a calculator on their website which will give you an estimate of the number of hours you'll get from their battery with your pressure setting.
As for my setup, I put my GK and the battery in separate mesh ditty bags that fit each rather snuggly. The bag openings are tied tight around the battery pack power connector, and CPAP air hose respectively. Each ditty bag has another small carabiner threaded through the mesh at the bottom corner of the ditty bag.
I have an unmodified HH Explorer Deluxe. I've put a small carabiner through the loop at the head end of the HH ridge line and clip both the battery pack and the CPAP ditty bags to it.
I still have to figure out what to do about winter camping with a CPAP. Below 0C (32F) I have condensation problems and I expect that getting down to -10C I might need a way to preheat the air coming in, maybe with some kind of air hose sock and a bunch of chemical foot/hand warmers...
Bookmarks