CPAP Machine and Battrey Life

What is a CPAP machine?

Not sure which model you have but there is no power use data on the website
CPAP Aust

Need that to find out why your running the battery down ..

Rgds

Steve

I don't use one Wato, but the power consumption varies a lot with different makes and it makes a LOT of difference whether you need to use the humidifyer, or not. Some use less than 1 amp without the humidifier.
D cell batteries are VERY small compared with a deep cycle battery.

Cheers,
Peter
OKA196 Motorhome

Would be surprised if you would find a cpap machine that would share a fridge for much more than one day, on say a 100ah battery, but I could be wrong. As mentioned, it is the humidifier that takes most of the power, so if using one, need to get used to not using it. Can you use the fridge on gas?

kenD
bris

I use a resmed autoset spirit, but have bitten the bullet and have 4 solar panels AGM deep cycle batteries inverter and electric fridge, however you have not stated the type of cpap machine you use I would suggest you will NOT be able to use D cell batteries
Ric

Wato,
I've just bought a RemstarPro M series, paperwork states it draws <1 Amp with-out humidifier and ~3 Amps with humidifier working.
Should be no problem for a DC battery if yours is about the same specsImage Could Not Be FoundMaîneÿ . . .

Hi there I use a Resmed on a 300W inverter of the car battery and have not had any problem on a 8 hour use.

Wato, you will need to keep it charged and have quite a capacity to provide power for any CPAP including 12v or 240v machines run on an inverter. You can't use any more than about the top 40-45% of your battery or the battery will never perform again to the original specs. That means about 200 amp-hours is necessary and then keep it charged if you are running an humidifier overnight.

It doesn't matter much if it is deep cycle, AGM or whatever, you can't use all the battery power you reckon you should without the performance falling off if you don't start big.