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(303) 840-4444


(303) 665-9569


(720) 484-5496


(303) 759-9525

Inogen One G4 Portable Concentrator

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The Inogen G4 Portable Concentrator is the lightest and smallest concentrator providing medical oxygen, weighing only 2.8 lbs. Capable of 24/7 use day and night, something many other portable concentrators are not capable of.


Inogen One G4 Portable Concentrator

The Inogen One G4 Portable Concentrator is one of the smallest and lightest portable oxygen concentrators that produces medical oxygen and offers a long lasting battery. This oxygen machine was designed to provide users with the highest level of independence. This innovative system rapidly detects a breath and delivers oxygen in the first 400 milliseconds. This is critical because this period is when the most gas exchange occurs in the lungs. Delivering oxygen at the start of a breath ensures that the oxygen is used more efficiently by your body. The Inogen G4 Oxgyen Concentrator can be effectively used during sleep at night, an area where many other portable oxygen concentrators fall short. With the G4, you won’t need separate oxygen systems for the day and night.

Portable oxygen concentrators like the Inogen series are the preferred choice for medical oxygen because they can be carried with one hand, require no rolling carts, and never run out or need to be refilled.

Key Specifications

  • Weight: 2.8 lbs
  • Dimensions: 5.91″ x 2.68″ x 7.2″ (includes single battery)
  • Flow settings 1-3
  • Battery duration:
    • Single battery: up to 2 hours 40 minutes
    • Double battery: up to 5 hours
  • Noise level: 40 dBA


  • Includes AC power supply, DC power cable (car charger), G4 single battery, and over the shoulder carrying bag
  • Intelligent Delivery Technology®
  • Long-lasting rechargeable battery
  • Ultra quiet
  • Meets FAA requirements
  • Can be charged at home or in the car


  • Concentrator: 3 years
  • Concentrator sieve beds and accessories: 1 year
  • See Limited Warranty Statement for details

Battery Life of Inogen G4

Setting Output (mL/min) Single Battery (hr/min) Double Battery (hr/min)
1 210 3 6
2 420 2 4.5
3 630 1.25 2.5

Visit Us at One of Our Three Locations

Parker Medical Supply Store

9845 S. Parker Rd.

Parker, CO 80134

(303) 840-4444

Louisville Medical Supply Store

1140 E. South Boulder Rd.

Louisville, CO 80027

(303) 665-9569

Littleton Medical Supply Store

8086 W. Bowles Ave.

Littleton, CO 80123

(720) 484-5496

Additional information

Battery Size

4 Cell (Single), 8 Cell (Double)




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