Interactive tool
CPAP DC Adapter Finder
Select your CPAP machine and we'll show you the exact DC cable you need to run it from a battery — no inverter required.
💡 Why a DC adapter?
Running your CPAP through a DC cable instead of the AC inverter adds 15–30% more runtime from the same battery. It also runs silent — no inverter fan noise.
Recommended adapter for ResMed AirSense 11
ResMed AirSense 11 DC Converter (12V to 24V)
Connection 12V → 24V
Required for AirSense 11. Plugs into any 12V battery or power station DC outlet.
Check price on Amazon →How to use it
- Plug the DC cable into your CPAP machine's DC input port.
- Connect the other end to your battery's 12V DC output (cigarette port or barrel jack).
- Turn on your battery, then your CPAP. The machine runs directly from DC power.
No inverter needed. No fan noise. No AC cable required.
Compatible batteries
Any portable power station or dedicated CPAP battery with a 12V DC output works with this cable. Most power stations include a DC port — look for "12V" or "cigarette lighter" output.
Find the right battery →As an Amazon Associate we earn from qualifying purchases.