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.
The connector does what it's supposed to. Long cord. Machine takes about a minute to get up to speed. Great in an SUV.
I bought a Respironics Battery Kit for a family members BiPAP from another Internet supplier. Somehow, the 12 VDC cigarette lighter socket was damaged or stopped working during a recent use. I sought replacement from the same supplier and found the price to be comparatively too high. While searching for other Internet suppliers I found CPAP.com carried the replacement at a lower and fair price. I also found the shipping response to be excellent.
If you have to sleep in a vehicle, then this is a must have. Works great.
I have always wanted more portability in my cpap. Had an occasion to try it out. Was very pleased and surprised at how little it drew on the battery over night. HIGHLY RECOMMEND!!
I haven't had the opportunity to use the DC plug yet, but it certainly is a great convenience for those of us who drive long distances and need to sleep why hubby takes over the wheel. I have become dependant on my CPAP over the years, not being able to sleep without it. This will also allow me to sleep on our boat when there is no regular power source, as well as our travel trailer. I am very happy to have this option and plan on purchasing a battery pack for it too, at a later time.
My husband is a commercial Truck Driver, and this fits the bill, he can use his CPAP when on the road. The cord is long enough, and works great.
Great product! So nice to now have a CPAP machine that converts simply to 12 volt with a adapter cord only. No pure sine inverters, no huge battery packs and no not another $300. Just the cord. Works great for camping with no power hookups.
Everything worked out well. Thank you for providing access to purchasing parts, some of which are not readily available elsewhere. You met my needs. Thank you.
works really well. I use this when we go camping. Before I would have to run generator all night just to power my cpap.
This cable is much longer than I expected: a true bonus. It appears to be about 15 feet long.
Thank you for your great service and speed. I'm goint on vacation and needed everything pretty quickly. I got exactly what I paid for!
after three times i think i have all the parts to use this battery pack--lets hope it works
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