My 97 year-old mother is on oxygen and goes camping with us. Like wrgrs mentioned, she has a stationary concentrator and a portable one. The stationary one we actually got off of Craigslist for about $200, they are easy to find. The portables are much more expensive and it is worth going through medicare. Electrical power can be an issue. The owner's manual will tell you what kind of draw to expect. You might want to get your 12-volt supply from a heavy-gauge wire attached directly to the battery. we have found that the cigarette plugs can get very hot.