External Battery Charger for Inogen One G4 Oxygen Concentrators

External Battery Charger for Inogen One G4 Oxygen Concentrators

3.00 Average Rating of 3 Reviews Read Reviews

$275.00 On Sale $199.50


If you have multiple Inogen One G4 batteries then the External Battery Charger is a great option that enables you to recharge your batteries outside of the concentrator.

Custom-made for Inogen One G4 Batteries, this charger can recharge a fully depleted Single Battery in approximately 3 hours or a Double Battery in 5 hours. The External Battery Charger includes a Universal AC Power Supply with North American power cord for use in US and Canadian wall sockets. (A plug adapter may be needed to convert plug connectors for usage outside of North America.)

USAGE: To use the External Battery Charger, simply plug it in and slide it onto your G4 Single or Double Battery. When the battery is in the correct position a solid red light will indicate the battery is charging. A solid green light will illuminate when the battery is fully charged. For complete instructions review the documentation that came with your equipment.

Product Information

  • Manufacturer Inogen
  • Part Number(s) BA-403
  • HCPCS Code E1357
  • GTIN / UPC Code
  • Country China (Typical Origin)


  • InogenOne G4 Portable Oxygen Concentrators

Physical Specifications

  • Size (Approx) 3.00 x 2.75 x 1.00 Inches
  • Total Length (Aprox) 7 Feet 2 Inches
  • Weight (Approx) .85 Lbs

Power Specifications

  • AC (Wall) Power 100 to 240 VAC (50 to 60 Hz)
  • AC Power Supply Yes
  • AC Power Supply Size 4.50 x 1.25 x 2.00 Inches (Approx)
  • AC Power Cord Length 5 Feet (Approx)


Average Rating of
Total 3 Reviews
  • Red light flashes

    Got the external charger and the red light flashes. Tried doing steps 2-4 many times and still have the problem. Not sure why I will do as I am traveling.
    Written by Ms. WY, Dayton Ohio2019-12-20
  • Inogen One G4 Battery Charger

    First one didn't work. Kept blinking red. I called and they immediately sent a new one which is working just fine. So basing this review on the second one. They sent me a return mailing sticker to return first one. Excellent response and service.
    Written by Very happy with 2nd one. , 2017-09-15
  • External charger was a bit disappointing

    I was really looking forward to the external charger. The instructions were very sparse, but mentioned the "flashing red light". Well I followed the instructions and tried 8-10 times before I could get the steady red light which meant the battery was charging. Wish it would "connect" easily but it doesn't.
    Written by raypenny3, 2017-02-15