All CPAPs will operate on DC power with the use of an Inverter to change the current from DC to AC before it reaches the machine. However, many will operate on DC power without the need for an inverter, just a power cord that plugs into the CPAP and ends in a cigarette lighter plug.
Inverters do require a lot of power. If you need to use an inverter to run your machine on battery power, the inverter will probably take about half the life off the battery.
To determine if your CPAP will operate without an inverter, look for a DC outlet on the machine, either at the back or on the side, with a single opening directly in the center. It should be labeled "DC POWER" or similar term. You can also review our Compare Charts to see if your machine has a optional DC cable option.
Here is a video describing different DC cable and battery options for various machines:
All machines can connect to DC power. Some machines are configured to operate on DC Power and have a DC power outlet. Other machines require AC power and will need an Inverter that turns DC power to AC power.
Having the proper equipment is the biggest key to successfully operating the machine from a battery. For example, if your machine does have a DC outlet and you want to run your machine from a marine battery, be sure to get the correct DC cable for the machine, as well as an adapter cable with alligator clips that fits over the cigarette lighter plug.
CPAP.com sells complete battery kits with everything you need for many machines including the correct cables for those machines and batteries. If you have questions about the specific power needs of your machine, review the 'Power' tab found on the machine's product page, or give us a call at 1-800-356-5221.
To prepare for your international travel, be sure to:
I have the old blue version of the S8 travel bag. My Respironics M-series machine fits in that bag quite... well plus there is lots of room for the mask, tubing, power brick and some other things you need while traveling. Unfortunately I have never been a fan of the blue color and it is starting to get a little worn. So when I saw this black version I thought it would be great. But alas it was not to be. This bag has two padded dividers inside the main compartment. While my machine would fit in one of them without the humidifier attached, there wouldn't be a way to take the humidifier along. The old version also has two exterior pouches which is nice for putting the tubing in one and you still have another for a book or magazines or even a thin laptop. This bag only has one exterior pouch for the tubing. Ultimately I was very disappointed and sent it back even though it meant paying the restocking fee. I wish they had a photo of the interior of the bag on here. If I had seen that I probably would not have ordered it in the first place. So, this bag appears to only be appropriate for the S8. Unfortunately the bag that came with my M-series is terrible for travel so I needed an alternative. So I will have to keep using the old blue version of this bag for a while longer. more...
Improved interior from the original one that came with the CPAP. Would be nice to have an option for... a better external fabric. more...
The original blue bag that i got with my S-8 had seen too many planes, TSA checkpoints and hotels. ... I had been looking for a replacement for some time, but my local stores told me that I could not purchase one separately. My S-8 is now completely refreshed with a new bag and an upgraded chamber that is easier to clean. The black bag is also less conspicuous than the blue one. My condition is not a secret, but I don't need to advertise it. more...
I purchased the bag as a replacement for the bag that came with my unit. Nicely designed and easy... to use. I'd prefer a more substantial piece of Velcro on the back to keep bag steady when placed on top of another piece of luggage. I thought the original bag wore more quickly than expected, but I'm not sure what put a hole in the front. Overall, recommended. more...
It fits my machine, full face mask, aromatherapy kit and hosing and humidifier, great product!!
Very nice bag and very roomy I am impredded an the price is great . Thanks C.Cummins