ResMed’s DC/DC Converter™ 24V/90W is designed specifically for the ResMed AirSense 10 device series. The pack comes with the AirSense 10 power block with device connection on one end and a cigarette lighter adapter on the other end. You also get a pair of positive and negative alligator clips attached to a female cigarette lighter socket which enables you to run the unit directly of a battery.
In order for the device to work effectively, it is important to adjust the climate control to manual and then turn off the humidification. This step is important to maintain power to the unit without draining your battery.