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External Battery Pack for Activox 4L Portable Oxygen Concentrators

The Activox External Battery allows you to attach an extra battery to your Activox Portable Concentrator for added time away from external power sources. The External Battery is simple and user friendly, sliding into the 4-Way Carrying Case during use and automatically switching from the external battery to the internal one as needed.

The External Battery will automatically recharge whenever it is attached to the Activox Concentrator if the concentrator is attached to a fixed AC or DC power source. The External Battery will power the Activox 4L for up to 4 hours on average depending the on oxygen flow settings.


  • Lightweight, Easy to Use and Durable
  • Intelligent and Automatic Operations
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Manufacturer: ResMed
Part Number(s): 200122
GTIN Number(s): 08582530040067
HCPCS Insurance Code(s): E1356

Battery Power: Rechargeable Lithium Ion
Battery Dimensions: 3.5 x 3.0 x 1.75 Inches (Approximate)
Battery Weight: 2.20 pounds (Approximate)
Battery Runtime: Setting 1 = 4.75-Hours, Setting 2 = 3.75-Hours, Setting 3 = 2.75-Hours, Setting 4 = 2.25-Hours (Average)
Battery Recharge Time From Fully Depleted: 2 Hours (Average)
Battery Type: Lithium Ion
Yes This product is approved by the FAA for use on all commercial flights within the US and all international flights that depart or arrive in the US. Always contact your airline prior to your flight to confirm any requirements they may have -- such as a copy of your prescription or a letter of medical necessity -- for allowing your device on board.

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Customer Reviews

  • New battery

    Came in mail very quickly, hooked up, charged and we were ready to go!
    Written by staggsmarilyn, 2018-05-30