ResMed Accessories : # 249004 Power Station II (RPS-II) with S9™ DC Cable pack

Finally it is here -- the battery pack for ResMed S9 series CPAP/VPAP machines. Use your lovely ResMed S9 CPAP/VPAP anywhere -- in an airplane, in a camp site, in a truck!

ResMed Power Station II is an external long-life, lithium-ion battery that simply. It works alongside ResMed sleep therapy devices and ventilators.

ResMed Power Station II with S9 DC Cable pack Features:

• Lithium-ion Battery
• Charges from 0% to 95% in Under Four Hours
• Informational Battery Charge Display
• Can be used in airplanes
• Audible & Visual Re-charge Alerts: a beeping sound and orange light (LED) indicate that the battery needs to be recharged


• Stylish and compact. Ideal for travel.
• Output power: 24v or 26v DC

The voltage output selector on the RPS II rear panel lets you select the correct output voltage for your device. Using the appropriate DC cable you can connect the battery to the ResMed therapy device to provide power or backup power. When providing backup power (for AC or DC inputs), the AC power cord connects the therapy device to the mains power outlet.

Battery running time

The battery running time depends on the machine model, device settings, leak, patient breath pattern, environmental condition or battery age, whether you use a humidifier or heated tubing. For ResMed S9 AutoSet™/Elite™/Escape™ running at 10cm pressure without humidifier or heated tubing, the battery will last 13 hours. In the worst case (20 cm H2O, with medium heated humidifier and heated tubing settings), the battery will last 2 hours. We recommend you buy an additional battery to double the capacity.

Using two batteries