ResMed Power Station II

All-in-one external battery for ResMed AirSense 10 and S9 CPAP devices. Lightweight. Suitable for travel. Provides 10-14 hours of back-up power (based on the humidifier

ResMed Oxygenium Medical

Important, the ResMed Power Station (RPSII) battery is not validated for recharging using the latest version of Power Supply Unit (PSU) provided with AirSense 10 devices. If your AirSense 10 device is powered by the new PSU version, you need an older version to recharge the RPSII battery. You can purchase the old version here. In addition you will require the AirSense 10 PSU Adapter to provide the connection between the PSU and RPSII battery for recharging.

How do I know if I have the new or the old PSU?

  • The cord on old version has a straight strain
  • The cord on the new version has a right angle strain

The ResMed Power Station II (RPS II) is a lightweight, all-in-one external battery that can be used to power ResMed AirSense 10 and S9 CPAP devices when mains power is not available. The lithium-ion battery provides approximately 10-14 hours of continuous operation when the target device is used without a humidifier and a heated tube1. If using the RPSII to run the device, humidifier and heated tube together, the run time is considerably shorter and could be limited to approximately 2-3 hours. For detailed information on Battery Run Times.

Please note that the ResMed Power Station II must be recharged using mains power and must be used in conjunction with an AirSense 10 or S9 DC cable. If you do not have an appropriate DC cable, please purchase an RPS II kit. A kit including the AirSense 10 DC cable and a kit including the S9 DC cable are also available.

  • Long-lasting: provides up to 14 hours (without humidifier and heated tube) of power for your CPAP device. For detailed battery life information, please see the ‘Advice/Videos’ section of this page.
  • User-friendly: beeps and LED lights alert you when the battery needs to be recharged.
  • Reassuring: a back-up solution if you’re going off the beaten track or are worried about power cuts.
  • Functional: an all-in-one solution that comes with an adapter and carry bag. Please note that you will also require an AirSense 10 or S9 DC charging cable – see above.
  • Practical: weighs less than 1kg.
  • Powerful: the power capacity and operation time can be doubled by pairing two batteries.


REF: 24921

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ResMed Power Station II