CPAP Machine

brickies · Guru

CPAP Machine

Mike C · Senior Member

For many years we had a camper trailer and I used a 12v APAP unit powered from a 110 AH battery and 40W solar never a problem and often up to a couple of weeks off grid.
Later used a 240V unit via a small inverter and again worked well.

Never use the humidifier tho as they add dramatically to the current draw.

cheers

Mike

grandpabob · Senior Member

Hi Brickies,

My wife has a resmed 9 which we run on a 300 watt pure sine wave inverter.

We have one 100amp/hr AGM and 120 watt solar no problems.

Bob

brickies · Guru

Thanks Bob

03_troopy · Guru

My wife bought the 12V power adaptor for the resmed9 and we run it from a 135AH deep cycle in the camper trailer.

bowlerbear · Senior Member

I have resmed 9 and use it with the 12v connection. I use the humidifier if on 240 v and sometimes with the 12v if I've got good solar input to keep the battery charged. But I stop using the humidifier if the charge stars going down. I have a 150 amp battery and a 100 watt solar panel.

-- Edited by bowlerbear on Thursday 27th of June 2013 12:51:47 AM

neilnruth · Guru

My hubby was told to get a battery to run it from and charge the battery each day with the generator rather than running the genie all night. Apparently, if you do need to use a genie to run medical equipment (some oxygen equipment won't run from a battery) you can put a sign up stating generator will be used all night for medical purposes and no one can complain. They will just have to move further away??

03_troopy · Guru

The Resmed S9 actually runs off 24VDC via power supply which is plugged into mains power. So for running it off a DC supply you are better off using the DC-DC converter available for it rather than converting your battery power to AC voltage via an inverter, then back to 24VDC via the standard power supply that comes with it. Saves on the extra losses incurred when converting between 12VDC to 240VAC and back to 24VDC.

-- Edited by 03_troopy on Monday 1st of July 2013 07:58:25 PM

AmandaJayne · Guru

I have a resmed too and we run it from the inverter, we have batteries and solar :) oh and I try not to use the humidifier...

Mike C · Senior Member

I was going to get a simple adapter when we had the camper but found having an inverter was more useful as it could be used for other purposes.
the minor losses really didn't account for much in for me.

Cheers

Mike

03_troopy · Guru

Mike C wrote:
I was going to get a simple adapter when we had the camper but found having an inverter was more useful as it could be used for other purposes.
the minor losses really didn't account for much in for me.

Cheers

Mike

Yep, a good point too Mike, if you have other things to run.. Like the myriad of battery chargers you always seem to need for cameras, notebooks etc.