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portable oxygen for sale
portable oxygen for sale

Inogen One G4 Portable Oxygen Concentrator

By Inogen


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Comes With
Concentrator, 1 battery, AC & DC power adapter, carry strap & bag, and owners manual.

3 year warranty on machine/ 1 year warranty on battery and accessories.

The smallest of the Inogen series, this concentrator will have you in awe of its giant battery life. The Inogen One G4 is one of the smallest portable oxygen concentrators on the market, only weighing 2.8 pounds. The FAA approved G4 is perfect for getting out of the house for the day, or even going on vacation. This unique machine will meet all your oxygen needs for 24/7 use. The G4 has Intelligent Delivery Technology, so it delivers oxygen within 400 milliseconds of you taking a breath. Only producing 40 decibels of noise, the G4 is the sound of a light rain so you don’t have to worry about disturbing anyone while using your Inogen One G4.

FAA Approved FAA Approved
Weight Machine + Single Battery: 2.8 lbs
Machine + Double Battery: 3.29 lbs
Dimensions Length: 5.91 in
Width: 2.68 in
Height: 7.2 in

Battery Duration

Flow 4 Cell 8 Cell
1 Liter Per Minute 3 hrs 5 hrs
2 Liters Per Minute 2 hrs 4 hrs 30 mins
3 Liters Per Minute 1 hr 15 mins 2 hrs 30 mins


Inogen Dealer

Since the G4 is half the size of the Inogen One G3, it is very easy to tote around. The Inogen One G4 is 5.91 inches in length, 2.68 inches in width, and 7.2 inches in height which makes it one of the smallest portable oxygen concentrators available. Whether you are hiking, golfing, biking, or just going to a movie the Inogen One G4 is a perfect fit for you. Oxygen users who are on 1-3 liters per minute pulse love the G4 for its long battery life and over the shoulder carry bag. This concentrator comes with a 3 year warranty on the machine, and a 1 year warranty on all accessories and sieve beds. The G4 is very low maintenance and only requires you to wash and dry your intake filter regularly. The Inogen One G4 comes with the machine, AC power supply, DC power cord, 4 or 8 cell battery, cannula, and owner’s manual.


Product Specifications

Flow Pulse
Weight 2.8 LBS With Single Battery, 3.29 LBS With Extended Battery
Dimensions L: 5.91 IN W: 2.68 IN H: 6.5 IN With Standard Battery

L: 5.91 IN W: 2.68 IN H: 7.2 IN With Extended Battery

Noise Level/ How Loud? 40 Decibels, Similar to a stream
Charging Time Up to 3 Hours for a Single Battery, Up to 5 Hours for a Double Battery
FAA Approved Yes
Manufacturer Inogen
Storage Operating Temperature: 41- 104 F; Storage Temperature: -4 – 140 F

Humidity: 0%-95% ; Non- Condensing

Operating Altitude Range 0-10,000 Feet
Power  100-240 V; 50-60 HZ
What Comes in the Box?  Machine, Battery, AC Supply, DC Supply,

Carry Bag + Strap, Cannula, User Manual

Does it Need to Be Refilled With Oxygen? No, the unit makes it’s own oxygen from the air around it
Max Oxygen Output 90% on all settings
Accessories 4 Cell Battery, 8 Cell Battery, External Battery Charger, Column Replacements, Gross Particle Filters, AC Power Supply, DC Power Supply, Carry Bag, Output Filter Kit
CPAP/ BiPAP Compatible? No
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