USB-C PD to 24V DC Power Converter for ResMed AirMini CPAP

Power your ResMed AirMini CPAP machine from a compatible USB-C PD power bank, portable battery, or USB-C charger using this compact, high-efficiency 24V DC power converter.

The ResMed AirMini CPAP machine requires a compatible 24V DC power supply and a special power connector. Most standard USB-C Power Delivery sources do not provide a fixed 24V output, so they cannot power the AirMini directly.

The BiXPower USBC-DC24V-AIRMINI converter kit solves this problem by converting compatible USB-C PD power into regulated 24V DC power and providing a dedicated connector designed for the ResMed AirMini.

Simply connect the included special USB-C PD input cable to a compatible USB-C PD power source, connect it to the converter, and use the AirMini-compatible output connector to power your CPAP machine.

Its compact size, lightweight design, and high conversion efficiency make it a convenient solution for compatible portable CPAP power applications, travel, camping, and backup power.

Power Your ResMed AirMini from USB-C PD

USB-C power banks and chargers are widely available, but most standard USB-C PD fixed-voltage profiles provide voltages such as 5V, 9V, 12V, 15V, or 20V rather than the regulated 24V DC required by the ResMed AirMini.

The BiXPower AirMini power converter uses a two-stage process:

1. USB-C PD negotiation: The special input cable requests 20V DC from a compatible USB-C PD power source.
2. 24V voltage conversion: The DC-to-DC converter transforms the incoming power into stable, regulated 24V DC for the AirMini.

The included AirMini-compatible output connector allows the converter to connect to the CPAP machine without requiring a separate generic barrel connector adapter.

Wide-Input 9V to 32V DC Power Converter

The included DC-to-DC converter is designed to provide regulated 24V DC output from a wide range of DC input voltages.

Its 9V to 32V DC input range allows the converter hardware to operate from compatible 12V batteries, 24V batteries, and other suitable DC power sources.

The converter is rated for up to 24V at 5A, equivalent to 120W, when supplied by an appropriately rated DC input source.

When using the included USB-C PD input cable, the available output power is limited by the USB-C PD source and cable capabilities, as well as conversion losses.

Compact and Lightweight Design

The converter is small enough for portable CPAP power setups where space and weight are important.

• Converter dimensions: 78 x 36 x 24mm (approximately 3.1 x 1.4 x 0.9 inches)
• Converter weight: Approximately 180g (6.35 oz)
• Efficiency: Greater than 90%
• Regulated output: 24V DC

Special ResMed AirMini Power Connector

Unlike many standard 24V DC devices, the ResMed AirMini uses a dedicated power connector.

This converter kit includes an output connector designed specifically for the ResMed AirMini CPAP machine.

The dedicated connector eliminates the need to adapt a standard 5.5 x 2.5mm DC barrel output directly to the AirMini power port.

Compatibility: Designed for the ResMed AirMini CPAP machine. Do not assume compatibility with other ResMed CPAP models, including AirSense and AirCurve machines, because their power connector and electrical requirements may differ.

Special USB-C PD Input Cable

The included USB-C PD input cable has a USB Type-C male connector on one end and a DC barrel connector on the other.

This special cable contains USB-C PD negotiation circuitry that requests 20V DC from a compatible USB-C PD power source.

The cable then delivers the negotiated 20V DC power to the converter's input connector.

How Much USB-C PD Power Is Needed?

The converter hardware is rated up to 120W, but this does not mean a USB-C PD power source can automatically provide 120W output.

For example, a USB-C PD source supplying 20V at 5A provides a maximum of 100W input power. After conversion losses, the available 24V output power is lower.

These figures are illustrative calculations, not guaranteed output ratings or AirMini power-consumption measurements. Actual available power depends on the USB-C PD source, cable current rating, conversion efficiency, and operating conditions.

For reliable CPAP operation, choose a power source with adequate capacity for the AirMini and any connected accessories. Verify compatibility and power capacity before relying on the setup for overnight therapy.

Technical Specifications

How to Connect the Converter to Your AirMini

1. Verify that your USB-C PD power bank or charger supports 20V output and has sufficient power capacity.
2. Connect the included USB-C PD input cable to the USB-C PD power source.
3. Connect the DC barrel end of the USB-C input cable to the converter's DC input connector.
4. Connect the dedicated AirMini-compatible output connector to the AirMini power input port.
5. Turn on the power source and check that the AirMini starts and operates normally.
6. Before overnight use, test the complete setup for stable operation under your prescribed therapy conditions.

Do not force any connector into the AirMini power port. Use only the intended AirMini-compatible output connector.

Using a Different DC Power Source

The converter hardware can also operate from a compatible 9V to 32V DC source, including suitable 12V or 24V batteries.

Its standard input connector is a 5.5 x 2.5mm female DC barrel jack. If the connector is intentionally removed for a custom installation, the original input wires are identified as:

• Red wire: Positive (+)
• Black wire: Negative (-)

Warning: Reversing input polarity can cause serious damage to the converter and connected equipment. Custom wiring should be performed only by a qualified person using suitable protection, connectors, and wiring.

Portable CPAP Power Applications

This converter can be useful when a compatible USB-C PD power source is available but a dedicated AirMini DC power supply is not.

• Portable CPAP battery power setups
• Camping with a compatible USB-C PD battery
• Travel with a suitable portable power bank
• Backup CPAP power during interruptions to normal power
• Mobile and off-grid CPAP power applications

The converter does not contain a battery. Actual CPAP operating time depends on the connected battery's usable energy capacity, the AirMini's power consumption, therapy settings, and converter losses.

This is a third-party power accessory, not a substitute for confirming the CPAP manufacturer's power requirements. Check compatibility and test the complete system before depending on it for therapy.

Frequently Asked Questions

Can I power my ResMed AirMini directly from a USB-C power bank?

Not directly from an ordinary USB-C PD output. The AirMini requires a compatible regulated 24V DC supply and dedicated power connector. This converter kit provides the necessary voltage conversion and AirMini-compatible connection when used with a suitable USB-C PD source.

Will this work with every USB-C power bank?

No. The USB-C power bank must support USB Power Delivery and offer a compatible 20V output profile. It must also provide sufficient power for the AirMini's operating requirements.

Can I use a USB-C laptop charger?

A compatible USB-C PD laptop charger may be used if it provides the required 20V output and adequate power capacity.

Will a 65W USB-C PD charger work?

A 65W USB-C PD charger may provide a compatible 20V output, but its suitability depends on the AirMini's actual power requirements, the charger's available PD profiles, and the converter's losses. Confirm the power budget and test compatibility before use.

Does this converter include a battery?

No. This product includes the converter and special USB-C PD input cable. A compatible USB-C PD battery or charger must be supplied separately.

Will this converter work with ResMed AirSense 10 or AirSense 11?

This product is specifically designed for the ResMed AirMini. Other ResMed CPAP machines may use different power connectors and have different electrical requirements. Do not use this product with another model unless compatibility has been verified.

Can I use a regular 12V battery instead of USB-C PD?

The converter hardware accepts 9V to 32V DC input and can be used with a suitable 12V battery through a compatible DC input connection. Correct polarity and sufficient input power are essential.

How long will my AirMini operate from a USB-C power bank?

Operating time depends on the battery's usable watt-hour capacity, the AirMini's actual power consumption, therapy settings, and conversion losses. A larger battery generally provides longer operation, but runtime cannot be guaranteed from battery capacity alone.

Package Contents

The standard package includes:

• 1 x BiXPower regulated 24V DC converter with dedicated ResMed AirMini-compatible output connector
• 1 x Special USB-C PD 20V input cable with DC barrel connector

USB-C PD batteries, USB-C chargers, and the ResMed AirMini CPAP machine are not included.

ResMed and AirMini are trademarks of their respective owners. BiXPower is an independent third-party accessory supplier. Compatibility descriptions do not imply manufacturer endorsement.