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Inogen One G4 Portable Oxygen Concentrator

G4 System

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The Inogen One G4 is designed for oxygen users looking for a small, quiet and lightweight portable oxygen concentrator. Weighing only 3.3 pounds*, the Inogen One G4’s portable size and battery pack can empower you to do activities outside the home such as running errands, visiting family or taking a vacation. The Inogen One G4 is approved for use on airplanes.**

The Inogen One G4 can be plugged into a power source at home, on the road or it can be used with an external battery when away from home. It gives you more options, simplified.

When it comes to warranties***, Inogen understands peace of mind is important. We’ve put together two customer warranties to best suit your individual needs. Our first is a standard Three-Year Warranty, while the second option is a Lifetime Warranty ensuring your concentrator is covered for life.  No matter which warranty you choose, you can always depend on Inogen.

Scroll below to see the listed accessories included in the Inogen One System. 

Inogen Systems require a qualifying prescription prior to shipment. Once you place an order an Inogen Oxygen Specialist will follow up with you to help you gather your prescription information.
14 Day Risk-Free Trial and Free Shipping offers apply to purchases only.

* with a double battery
** Based on Technical Performance Data. Check with carrier for local regulations.
*** View Inogen’s Limited Warranty Statement

Weight Weight:
3.3 Pounds
Flow Settings Flow Settings:
1 - 3
Dimensions Dimensions:
Height: 7.8 IN.
Length: 5.91 IN.
Width: 2.68 IN.
Battery Duration Battery Duration:
Double Battery: up to 5 hours @ Flow Setting 1
Sound Level:
40 dBA @ Flow Setting 2
Inogen Connect:
Bluetooth Mobile App
What's Included
Technical Specifications
  • Inogen One G4 AC Power Supply
    AC Power Supply
    AC power supply for the Inogen One G4
  • Inogen One G3 and G4 DC Power Cable
    DC Power Cable
    DC Power Cable for the Inogen One G4
  • Inogen One G4 Double Battery
    G4 Double Battery
    Battery duration up to 5 hours @ flow setting 1
  • Inogen One G4 Carry Strap
    G4 Carry Strap
    Easily carry your Inogen One G4 with this shoulder strap.
  • Inogen One G4 Carry Bag Without Straps
    G4 Bag
    The G4 bag provides a protective covering for your Inogen One G4.


3.3 lbs*


5.91 × 2.68 × 7.79 in (Height includes double battery)

Oxygen Flow

Intelligent Delivery Technology®

Three flow settings from 1-3

Power Settings

AC Power Supply 100-240V, 50-60Hz

(auto sensing to allow worldwide use)

DC Power: for mobile use in car/airplane

Duration: up to 5 hours @ flow setting 1

Noise Level

40 dBA @ flow setting 2


Concentrator: 3 Years or Lifetime

Concentrator Sieve Beds and Accessories: 1 year

**See Limited Warranty Statement for details.


Designed for stationary, portable, and travel

*with a double battery

Additional Accessories

External Battery Charger (G4)


Inogen One G4 Battery Charger

External Battery Charger (G4)


More Details   

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