ResMed AirSense 10 & AirCurve 10 DC Power Converter – 12V/24V Battery and Car Adapter
Compact, Quiet, High-Efficiency DC Power for Your CPAP Machine
The BiXPower DD90M2-CBS10 DC Power Converter lets you operate compatible ResMed AirSense 10, AirStart 10, and AirCurve 10 machines from suitable DC power sources, including rechargeable batteries, portable DC power systems, and vehicle power sockets.
Featuring a wide 10V–30V DC input range, the converter delivers regulated 24V DC power up to 90W through its dedicated ResMed-compatible output cable.
Its compact, fanless design operates quietly and offers up to 96% conversion efficiency, making it a practical power solution for camping, travel, RV use, and CPAP backup power systems.
Key Features
- Wide DC Input: Accepts 10V–30V DC power from suitable batteries and vehicle power systems.
- Regulated 24V Output: Designed for compatible ResMed 10-series CPAP and BiLevel machines.
- Up to 90W Output: Maximum rated output of 24V DC, 3.75A.
- Up to 96% Efficiency: Helps minimize power loss and conserve battery energy.
- Fanless and Quiet: No cooling fan noise during operation.
- Compact and Lightweight: Approximately 2.5 x 1.9 x 0.7 inches and 2.54 oz.
- Flexible Input Connections: Three convenient ways to connect a suitable DC power source.
- Additional USB Output: USB power output for compatible devices.
- Built-In Protections: Short-circuit, overcurrent, overvoltage, and overtemperature protection.
Compact, Lightweight and Fanless Design
Small enough to fit comfortably in your hand
Measuring only approximately 2.5 x 1.9 x 0.7 inches and weighing just 2.54 ounces (72g), the DD90M2-CBS10 is easy to carry with your CPAP equipment.
Its fanless design eliminates fan noise, an important advantage for CPAP users who need a quiet sleeping environment.
Up to 96% Conversion Efficiency
When powering a CPAP machine from a rechargeable battery, converter efficiency matters. Less energy wasted during conversion means more of the battery's stored energy can be delivered to the connected equipment.
The BiXPower converter achieves up to 96% efficiency under suitable operating conditions.
Example at 90W Output:
At 96% efficiency, a converter delivering 90W would draw approximately 93.75W from the battery. At 85% efficiency, it would draw approximately 105.9W.
Actual efficiency varies with input voltage, output load, and operating conditions.
Three Convenient Ways to Connect DC Power
The DD90M2-CBS10 supports multiple DC input connection methods, allowing you to choose the one that matches your battery or vehicle power system.
Option 1: Vehicle Cigarette Lighter Socket
Use the included cigarette lighter plug together with the input cable to connect the converter to a suitable vehicle or battery power socket.
This connection method is useful for compatible car, truck, RV, and portable battery power sockets.
Important: Make sure the cigarette lighter socket, plug, wiring, and power source can safely supply the required input current. Higher loads at lower input voltages can cause excessive current and connector heating.
Option 2: Battery with 5.5 x 2.5mm Female DC Output
If your battery has a compatible 5.5 x 2.5mm female DC output port, use the included input cable to connect it to the converter.
Example connection with a BiXPower rechargeable battery — battery and CPAP not included
Connector Note: The included input cable uses a 5.5 x 2.5mm connector. Some batteries have 5.5 x 2.1mm output ports, which may not provide a reliable connection. A compatible connector adapter, such as the BiXPower CNT-C3, may be needed.
Option 3: Battery with 5.5 x 2.5mm Male Output Cable
If your DC power source already has a compatible 5.5 x 2.5mm male power plug, it can connect directly to the converter's female DC input port without the separate input cable.
Always confirm the DC source voltage, connector dimensions, polarity, and current capability before making the connection.
Converter Input and Output Connections
DC input port
USB power output and main regulated DC output
The dedicated output cable is designed for the compatible ResMed 10-series power input. Use the supplied cable rather than a generic 24V barrel cable.
Compatible ResMed CPAP and BiLevel Machines
This converter is designed for the following ResMed models:
- ResMed AirStart 10 CPAP
- ResMed AirStart 10 Auto CPAP
- ResMed AirSense 10 CPAP
- ResMed AirSense 10 Elite
- ResMed AirSense 10 AutoSet
- ResMed AirSense 10 AutoSet for Her
- ResMed AirCurve 10 S
- ResMed AirCurve 10 VAuto
These models may be equipped with HumidAir heated humidifiers. Actual power consumption depends on device configuration, humidifier settings, heated tubing, and therapy requirements.
Compatibility Notice: This product is intended for the listed ResMed 10-series devices. It should not be assumed compatible with ResMed AirSense 11, other CPAP brands, or devices requiring different power connectors or electrical signaling.
Technical Specifications
| Brand | BiXPower |
| Product Code | DD90M2-CBS10 |
| Product Type | DC-to-DC Power Converter / CPAP Battery Adapter |
| Input Voltage | 10V–30V DC |
| Output Voltage | Regulated 24V DC |
| Maximum Main Output Current | 3.75A |
| Maximum Main Output Power | 90W |
| Conversion Efficiency | Up to 96% |
| USB Output | 5V/3A, 9V/2A or 12V/1.5A maximum, depending on negotiated output mode |
| Cooling | Fanless |
| Dimensions | 2.5 x 1.9 x 0.7 inches (approximately 63.5 x 48.9 x 16.9mm) |
| Weight | 2.54 oz (72g) |
| Operating Temperature | 0°C to +40°C |
| Operating Relative Humidity | 20%–80% RH |
| Storage Temperature | -20°C to +70°C |
| Storage Relative Humidity | 10%–90% RH, non-condensing |
| Ripple and Noise | ≤300mV |
| Protection Features | Short circuit, overcurrent, overvoltage, overtemperature |
| Warranty | 1 Year |
Package Contents
- 1 x BiXPower DD90M2 DC Power Converter with dedicated ResMed 10-series output cable
- 1 x DC Input Connection Cable
- 1 x Vehicle Cigarette Lighter Power Plug
Battery and CPAP machine are not included.
Important Usage and Safety Information
- Correct Input Voltage: Use only DC power sources within the specified 10V–30V range.
- Power Source Capacity: The battery or vehicle socket must supply sufficient power for the converter and CPAP load.
- 12V Input Caution: At high output loads, input current can be substantial. Check the cigarette plug, barrel connectors, wiring, and connections for suitable current ratings.
- Connector Compatibility: Verify connector size and polarity. Never force mismatched connectors together.
- Humidifier Use: Heated humidification and heated tubing can significantly increase power consumption and reduce battery runtime.
- Ventilation: Although fanless, the converter may become warm. Do not cover it or place it under bedding.
- Backup Planning: Test your complete battery and CPAP setup before relying on it during travel or a power outage.
Frequently Asked Questions
Can this converter power a ResMed AirSense 10 from a 12V battery?
Yes. The converter accepts 10V–30V DC input and provides regulated 24V output through the dedicated ResMed-compatible cable. The battery must provide sufficient input current.
Can I use it with a 24V battery?
Yes, provided the battery output stays within the converter's 10V–30V DC input range and meets the electrical and connector requirements.
Does the converter include a rechargeable battery?
No. This product includes the converter and connection accessories. The battery and CPAP machine are sold separately.
Can I use the converter with a car cigarette lighter socket?
Yes. A cigarette lighter plug is included for compatible DC sockets. Confirm that the socket and plug are rated for the required current.
Is the converter quiet enough for bedside use?
The converter uses a fanless design, so there is no cooling fan noise during operation.
Can I use the heated humidifier?
Compatible ResMed 10-series devices may use their heated humidifiers, subject to the converter's 90W output limit and the power source's capability. Heated humidification increases energy consumption. Turning off heating functions can extend battery runtime when clinically appropriate.
How long will my CPAP run on a battery?
Runtime depends on battery capacity, CPAP settings, heated humidification, tubing, and converter efficiency. A simple estimate is usable battery watt-hours multiplied by converter efficiency, divided by average CPAP power consumption in watts. Actual runtime varies.
Will this converter work with AirSense 11?
This model is designed for the listed ResMed 10-series machines. AirSense 11 requires a different compatible power connection. Select an adapter specifically designed for AirSense 11.
Reliable DC Power for Your ResMed CPAP
With its wide input voltage range, compact size, fanless operation, and high-efficiency design, the BiXPower DD90M2-CBS10 provides a practical way to power compatible ResMed 10-series CPAP machines from suitable rechargeable batteries and DC power sources.
BiXPower – Professional Portable Power Solutions.
