Portable Oxygen Concentrator G4 Inogen

Product information




The Inogen One G4 is designed for oxygen users looking for a small, quiet, 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 meets FAA requirements for travel.

Additional details

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

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

Regarding warranties**, Inogen understands that 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.

  • 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.

Sky medical supplies use case for inogen G4 portable oxygen concentrator.

You may regain independence thanks to the Inogen One G4 Portable Oxygen Concentrator, which was thoughtfully created. With Inogen One G4, you can travel in luxury, grocery shopping, or on vacation. You can choose the ideal size that complies with the recommended oxygen flow by your doctor because it comes in 3 and 5-liter sizes. The 3 liters and 5 liters each have an integrated lithium-ion battery that powers them for up to 5 and a half hours or nearly 5 hours, respectively. Inogen One G4 is a fully mobile oxygen therapy solution for lengthy excursions, thanks to purchasing an optional external battery, which doubles your time.

  • The Inogen One G4 is lightweight for such potent equipment, weighing less than 5 lbs and 6.6 lbs.
  • The sophisticated Controlled Minute Volume (CMV) technology is used in Imogen's construction. 
  • Precision Medical's patented CMV technology steadily distributes a constant oxygen supply every minute during the first third of inhalation, regardless of the respiratory rate. 
  • To assure oxygen quality and endurance, each gadget undergoes a thorough testing process. Every POC leaves the plant providing the 95.5% purest oxygen possible, thanks to our quality control.

 listed accessories included in the Inogen One System.

 portable oxygen concentrator (POC), Oxygen to Go,  portable oxygen generator, Oxygen Concentrators,  portable oxygen machine


AC power supply for the Inogen One G4


    DC Power Cable for the Inogen One G4


    Battery duration up to 5 hours @ flow setting 1


    Easily carry your Inogen One G4 with this shoulder strap.

  • 3.3 lbs*