24V DC-to-DC Power Converter for ResMed AirSense 11 CPAP
Power your ResMed AirSense 11 CPAP machine from a compatible DC battery or portable power source.
The BiXPower DC24V-AS11-525M is a compact, lightweight DC-to-DC power converter designed to supply stable, regulated 24V DC power to ResMed AirSense 11 PAP machines.
With a wide 9V–32V DC input range and up to 65W output power, this converter allows you to use compatible rechargeable batteries and other DC power sources without requiring a traditional AC wall outlet or a separate DC-to-AC inverter.
Its small size, lightweight design, and dedicated AirSense 11 power connector make it a practical solution for portable CPAP battery setups, camping, RV travel, off-grid power systems, and emergency backup power.
Key Features & Benefits
- Designed for ResMed AirSense 11: Includes a dedicated CPAP power connector.
- Wide DC Input: Accepts 9V to 32V DC power.
- Stable 24V Output: Converts variable DC voltage to regulated 24V DC.
- Up to 65W Output: Supports compatible CPAP power requirements within the converter's rated capacity.
- High-Efficiency DC Conversion: Avoids the additional DC-to-AC conversion stage of an inverter-based setup.
- Compact & Lightweight: Approximately 90 x 36 x 26mm and 142g.
- Flexible Battery Connection: Includes a DC input cable with 5.5 x 2.5mm barrel connectors.
- Portable Power Applications: Suitable for compatible battery-powered CPAP setups at home or while traveling.
Convert 9V–32V DC Power to Regulated 24V DC
Many portable battery packs and DC power systems provide voltages that differ from the 24V DC power required by ResMed AirSense 11 machines.
This BiXPower converter accepts a broad range of DC input voltages, from 9V to 32V, and regulates the output to 24V DC. This allows a compatible DC battery to supply power to an AirSense 11 through the converter's dedicated CPAP connector.
Power Conversion:
9V–32V DC Input → Regulated 24V DC Output
Maximum Rated Output Power: 65W
DC Input & Output Connections
The converter is designed to provide flexible connections to compatible DC power sources.
Input Side: Features a 5.5 x 2.5mm female DC barrel connector and two 16AWG bare wires, providing options for connection to an appropriate DC power supply.
Output Side: Uses 18AWG wires and a 5.5 x 2.5mm male barrel connector, together with the dedicated power connection arrangement for ResMed AirSense 11 machines.
The included input cable has 5.5 x 2.5mm male DC barrel connectors on both ends, making it convenient to connect a compatible battery output to the converter's female input connector.
Technical Specifications
| Model |
DC24V-AS11-525M |
| Product Type |
DC-to-DC Power Converter |
| Input Voltage |
9V–32V DC |
| Output Voltage |
24V DC Regulated |
| Maximum Output Power |
65W |
| Input Connector |
5.5 x 2.5mm Female DC Barrel |
| Input Wires |
16AWG Bare Wires |
| Output Connection |
5.5 x 2.5mm Male Barrel, 18AWG Wires, AirSense 11 Power Connector |
| Dimensions |
90 x 36 x 26mm (Approx. 3.5 x 1.4 x 1.0 inches) |
| Weight |
Approx. 142g (5 oz) |
| Designed For |
ResMed AirSense 11 PAP Machines |
Compact Size & Lightweight Design
Measuring approximately 90 x 36 x 26mm and weighing only 142g, this converter can easily fit into a CPAP travel bag or portable battery setup.
How to Connect the Converter to a Battery
Connecting the converter to a compatible DC battery is straightforward.
-
Check Your Battery Output: Confirm that the battery provides 9V–32V DC, has sufficient output capacity, and uses the correct connector and polarity.
-
Connect the DC Input: If your battery has a center-positive 5.5 x 2.5mm barrel output, connect it to the converter using the appropriate cable.
-
Connect the AirSense 11: Insert the converter's dedicated AirSense 11 power connector into the CPAP machine's power input.
-
Turn On the Battery: Enable the battery output and verify that the CPAP machine powers on normally.
Important: Verify DC voltage, connector size, polarity, and power capacity before connecting. A matching barrel connector does not automatically mean a power source is electrically compatible. Do not reverse the polarity of the bare-wire input.
Battery and CPAP machine are not included.
Included DC Input Cable
The included input cable features 5.5 x 2.5mm male barrel connectors on both ends.
One end connects to the converter's female DC input connector. The other end can connect to a compatible DC power source equipped with a matching 5.5 x 2.5mm female output jack.
This detachable cable arrangement provides flexibility when connecting the converter to suitable portable battery packs and DC power systems.
Portable CPAP Battery Power for Travel & Backup
The BiXPower AirSense 11 DC converter is designed for situations where AC wall power is unavailable or inconvenient.
When paired with an appropriately rated DC battery, it can form part of a portable CPAP power system for:
- Camping and outdoor travel
- RV and camper power systems
- Off-grid cabins and portable power stations
- Home emergency backup power
- Battery-powered CPAP operation where a compatible DC supply is available
Because the converter operates directly from DC power, it eliminates the need for an additional DC-to-AC inverter in compatible installations. This can help reduce unnecessary power-conversion losses.
For illustration only. Battery and CPAP machine are not included.
Compatibility & Important Information
CPAP Compatibility: Designed for ResMed AirSense 11 PAP machines using the appropriate AirSense 11 power connector.
Battery Compatibility: Requires a DC power source with output voltage between 9V and 32V, correct polarity, a compatible connection, and sufficient power capacity.
Maximum Converter Output: 65W. Actual CPAP power consumption depends on the machine's operating mode, pressure settings, humidifier use, heated tubing, and other operating conditions.
Important Power Limitation: This converter is not a substitute for a higher-rated power supply when the CPAP configuration requires more than 65W. Verify the power requirements of your specific machine and accessories before use.
Battery Runtime: Runtime depends on battery capacity, battery output voltage, converter efficiency, and the CPAP machine's actual power consumption. No fixed operating time is guaranteed.
Medical Use: This is a DC power accessory, not a battery or uninterrupted power supply. If continuous therapy is medically essential, use an appropriate power backup system and follow your healthcare provider's and CPAP manufacturer's guidance.
Frequently Asked Questions
Can I power my ResMed AirSense 11 from a 12V battery?
Yes, provided the battery supplies a compatible DC voltage, sufficient power, and the correct connector and polarity. The converter changes the battery's DC output to regulated 24V DC for the AirSense 11.
Does this converter work with 24V batteries?
Yes. Its input range is 9V–32V DC, which includes compatible 24V DC power sources. Always verify the battery's actual operating voltage range.
Does this converter include a battery?
No. The package includes the DC-to-DC power converter and one input cable. The battery and CPAP machine are sold separately.
Do I need an AC inverter?
No. With a compatible DC battery or DC power supply, the converter provides regulated 24V DC without requiring a separate DC-to-AC inverter.
Can I use the humidifier and heated tubing?
Only if the total power demand remains within the converter's 65W rating and the battery can supply the required input power. Some AirSense 11 operating configurations may exceed this rating. Check the requirements of your particular setup.
Can I connect the converter directly to a USB-C port?
Not directly. This model uses a DC barrel input rather than a USB-C input. A separate, appropriately rated USB-C PD trigger or power adapter would be required, and compatibility must be verified.
Package Contents
- 1 x BiXPower 24V DC-to-DC Power Converter for ResMed AirSense 11
- 1 x DC Input Cable with 5.5 x 2.5mm Male Connectors
Note: Battery, CPAP machine, and other accessories shown in application photos are not included.
A Compact DC Power Solution for AirSense 11
The BiXPower DC24V-AS11-525M provides a convenient way to convert compatible 9V–32V DC battery power into regulated 24V DC for ResMed AirSense 11 CPAP machines. Its wide input range, compact design, included DC cable, and dedicated CPAP connector make it a practical accessory for portable CPAP power applications where the total power requirement does not exceed 65W.
ResMed and AirSense are trademarks of their respective owners. BiXPower is an independent accessory supplier. Product compatibility does not imply endorsement by ResMed.
