An In-Depth Review on the Inogen One G3 Portable Concentrator

The Inogen One G3 Portable Oxygen Concentrator is a state of the art portable oxygen concentrator that combines lightweight portability and long battery life with superior pulse dose oxygen therapy. The Inogen One G3 is designed to give you the freedom to travel that home oxygen concentrators and oxygen tanks limit.

The Inogen One G3 is one of the smallest and most lightweight portable oxygen concentrators available on the market today. At just 4.9 pounds and only 7.25 inches tall, the Inogen One G3 blends into your home environment. The G3 is housed in a sleek matte white plastic case with metallic blue accents and is inconspicuous in your home and unobtrusive while you are away from home. The Inogen One G3 is small enough to be held in your hand and also comes with an included carry bag.

The Inogen One G3 control panel features five large, easy-to-read buttons which operate the machine. A large power button easily turns the G3 on and off. The pulse dose settings of the G3 can be changed by pushing two triangular plus and minus buttons. Turn the audible breath detection alarm on and off with an audible alarm button also located on the G3's control panel. The Inogen One G3 control panel also features has built-in safety mechanisms including a breath detection light and an alarm light.

Many portable oxygen concentrators have displays that are difficult to read, but the Inogen One G3's display is very clear. The LCD display clearly shows the pulse flow setting in use, the remaining battery life, and the status of the audible alarm feature. A backlit display button makes the Inogen One G3's display easier to read in dark and low light rooms.


Dimensions: 7.25" High x 8.75" Wide x 3 " Deep
Weight Specs: 4.8 pounds with 8 cell battery
Battery Life: Up to 5 ours with 8 cell battery
Up to 10 hours with 16 cell battery

The compact and lightweight design of the Inogen One G3 makes it an ideal POC for travel as well as daily trips around town. At just 4.9 pounds with the 8-cell battery attached, the G3 is one of the lightest weight POCs available on the market. The included carry bag makes trips to the grocery store, parks and restaurants while using supplemental oxygen manageable.

The Inogen One G3 runs on both AC and DC power supplies so that you can charge the unit's battery on the road. The G3 comes with one 8-cell battery capable of running for up to 5 hours on setting 1. Additional batteries are available for purchase including a 16-cell battery with up to 10 hours of battery life between charges. As the Inogen One G3 is operated at higher pulse dose settings, the battery life between charges decreases. The 8-cell battery can be charged both while in use and while not in use, and will recharge fully in about 4 hours when not in use.

The Inogen One G3 is FAA approved for air travel. The unit's long battery life makes the G3 a perfect solution for travel. Using the included 8-cell battery on Setting 1, the 5 hour battery life gives you enough time to travel to the airport, check-in, go through a standard security line, and take a two hour flight before having to charge the battery or switch to a supplemental battery. When combined with use of the DC power supply to charge and run the G3 to and from the airport and an additional battery, you could travel across the country without running out of oxygen.

The Inogen One G3 portable oxygen concentrator runs on the air around it which eliminates the need to worry about heavy oxygen tanks and tank refills. The G3 is a pulse dose ambulatory oxygen concentrator that delivers oxygen with every breath. Pulse dose settings 1 - 4 are available on the G3. When used at setting 4, the G3 can deliver up to 840 ml of oxygen per minute and puts out oxygen concentrations of 87% - 95.6% at all settings.

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The Inogen One G3 Portable Concentrator comes with everything you need to use your oxygen system at home or away. Every G3 comes with an included 8 cell battery and AC and DC power supplies. One nasal cannula, a shoulder-strap carrying case, and accessory bag are also included with your G3. Extra batteries, including a 16-cell battery with up to 10 hours of battery life, are sold separately.

Due to our online pricing policies with Inogen we are unable to display prices on this page. We would be happy to answer any pricing or product questions you may have regarding this item. Please call us at 1-877-774-9271 and we would provide you with our "Guaranteed Low Price".


The Inogen One G3 is the only oxygen system you will every need. Equipped with robust features, the G3 is a suitable solution for even the most oxygen dependent patients. The compact size of the G3 provides increased freedom and portability over a home oxygen concentrator, and the sleek design blends seamlessly into the your home. With up to 5 hours of battery life with the included 8-cell battery, you can travel without concern about running out of oxygen.

An In-depth look at the Inogen One G3

About Scott Ridl: Scott joined American Medical Sales and Rentals in 2008 as a Web Manager and Content Writer. He is a writer and designer. He is extensively trained on oxygen therapy products from leading manufacturers such as Inogen, Respironics, Chart, Invacare, ResMed and more. Scott works closely with respiratory therapists and oxygen specialists to educate the community about oxygen therapy products, COPD, asthma and lung diseases. He writes weekly columns and is passionate about educating the community on oxygen therapy and respiratory issues.

5 thoughts on “An In-Depth Review on the Inogen One G3 Portable Concentrator”

  • Highly impressed by the portability of this oxygen concentrator, the battery life is worth admiring too.

  • Carolyn Murphy

    I am not impressed! In one week I have, twice had to exchange the Inogen G3 I bought. I now have a third one and will also need to send this one back because even though it doesn't have issue's the first two had, it is not as quiet as Inogen claims - there is no way I could use this unit in a movie theatre or a restaurant.

    • Danielle Jason

      We are sorry to hear about your experience, Carolyn. Did you purchase these units from the Inogen manufacturer directly?

      • Bill S.

        I rented a G3 and carried it with me on flights from Reno Nevada to Jacksonville NC and back. First I would like to say that it was not a burden to carry with me at all, second there was no trouble with TSA or the Airlines either. I did use it on the aircraft while cruising at 34 thousand feet a couple of times and it worked really well. My wife and I do a lot of RVing in the high mountains of the Sierra and this is exactly what I need for that. So now I have gone ahead and purchased a new Inogen One G3 and feel happy with my decision. The only drawback would be that if you use settings above 2 it does start to get a little loud and uses batteries a little faster.

  • Alan sederis

    I own the iogen g3 it works great but the c as r charger keeps blowing fuses in my car. Any suggestions on what I can do


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