12v <span class="highlight">CPAP</span> machines - what brands are recomended??

If you already have a CPAP, why not just use a 240 volt with Inverter. Should run successfully off your car battery for a night. They don't draw a lot of power, use my thus and never had a problem with flat battery overnight. Otherwise check with suppliers of various machines they vary greatly in price - the dearest is n't necessarily the best. They all conform to required specifications. I use a Sullivan brand. If you have private health you might find they will provide you with some cover. Mine up to $1,200.00 covered the full price.

Not necessarily preferred but run a Resimed on 12V and no problems. Never measure amp draw but fridge and fluro light also are in the equation and can cope with overnight draw. Cheers

I use a SoloPlusLX from Respironics. I got it early in 2000 so it may not be a curtrent model now. It uses less than 1 amp while running and about 3 on start up. It has a 12volt input. Only problem I have had on 12v was initially I ran a long (maybe 20feet) lead from the 4wd battery and it was hesitant about starting. Problem solved by moving the vehicle close to the tent and using a shorter lead. I also have run it for 3 nights on a Projecta Jump starter (17ah battery). It was flat after the third night so I estimate that it used about 5 amps each night. It would run many nights on a typical 4wd battery.
It has a control which runs it at less than its operating pressure for the first 20 minutes or so - I always use that and would be sure to get that if I ever have to replace this one. I've used it every night since getting it - many times on 12 volts in the bush - wouldn't leave home without it!!

Whats a CPAP machine ??????

240v Resmed Autoset Spirit to provide a compliance history. It needs a 300w sine wave inverter if you need a humidifier and users most do. The battery useage depends how long you sleep. I am not a sparky so I won't do the calcs for you. You can email or phone me Mainey, with info at the Rig Pic