cpap machines

A friend of mine had to use one & had to use a genset.

Baz.
I have a mate who runs his machine from his dual battery setup via an invertor. He has done a few trips with no problems. Eric.

Hello Baz, I use a SoloPlus LX. I bought a 12v lead for it. I ran it for 3 nights from a Projecta Jump Start portable power pack without charging in between. I think the power pack was about empty at the end of that trip. I also ran it direct from the vehicle battery each night on a Simpson desert crossing. It uses so little power that it made no difference to starting in the morning. One tip if using it from the car, go direct to the battery and use the shortest possible lead. The starting circuit needs a fair bit of power and I initially had a long lead so that I didn't have to park too close to the tent and it wouldn't fire up properly and ended up resetting the pressure - hassles! The Projecta is the go for me now - can recharge from 240v or the car. Runs it for 2 nights easily and 3 at a squeeze. By the way, I spoke to another CPAP user and he only got 1 night from a power pack so obviously his used more power than mine. From memory mine needs 3 amps to fire up and then runs at just under 1amp. Worth checking before buying!

baz
what the hell is a cpap? ? ? ? ?

regards
jeff

The remstar brand has provision to be run on 12V. Can be run straight off the battery without the need for Generators, Inverters etc. Very reliable and up to the task. If you want more info then happy to respond to your email address. CheersButcher Country Track - Vic

I have a Resmed S6. I run it through and inverter of my second battery (an Optima Deep Cycle Gel cel) which also runs the fridge and lights. I can get two days out of this set up without running the vehicle. However, with the optima, you only have to run the car for40 - 50 minutes for it to be charged from dead flat.

We do lots of remote trips, and the CPAP hasn't stopped me going anywhere!!.

Just as a point of interest, the CPAP draws between 1 amp and 1.75 amps - depending on whether you're breathing in or out. I'd be interested to know what the 12 volt systems draw.

It has not been said that some Cpap machines required a freq to startup, if you do not have 50Hz it will not start. This is not common for all Cpap machines but only some, it will alter the price of your invertor if you have to buy a full sine wave or mod sine wave.

Just something else to consider before you lay out ya money.

Baz,
I have been running my Sullivan V of a 300W Powerboss inverter from Redarc for about 4 years now on my camping trips and for work. Works just fine. The DC draw by the inverter under load with the CPAP connected rises and falls bbetween 2 and 4A as you breath with the CPAP set at about 9cmH2O pressure.

On a small 36Ah battery I could generally run the camp flouro all evening and the CPAP on the inverter for 5-6hrs. It would not do a second night. The 70Ah on my work truck carries the same plus the fridge easily.

JohnS

Thanks to all who replyed

Baz/Wendy

My husband has sleep apnoe and we have bought a yamaha 1.5kva generator which was recommended by the makers of his machine. Our last camping trip we got 9/12 hours out of the generator which also had a fridge and other battery charging accessories on board as well. The one problem with generators is that a lot of the national parks will no allow generators!!! We wonder how you would go if you challenged this rule on the grounds of a medical condition.
We however have set our sights on finding as many bush camps as possible away from the national parks.
This is a challenge, but and enjoyable one.
Lynne