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Inogen One G4 Portable Oxygen Concentrator with DOUBLE BATTERY

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  • Inogen One G4 Portable Oxygen Concentrator for Sale
  • Inogen G4 portable oxygen concentrator friends on patio
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  • 8-Cell Double Battery for use with the INogen Oe G4 Portable Oxygen Concentrator
  • Inogen One G4 shown in Carry case
  • Inogen One G4 shown with tubing attached
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 Product Description





Who can use the Inogen One G4 portable oxygen concentrator? Users who require an oxygen device which can deliver 1 to 3 Pulse Settings of supplemental oxygen.

                     **A valid prescription is required for the purchase of this product.

The Inogen One G4 8- Cell portable oxygen concentrator is the lightest weight, smallest, and one of the quietest portable oxygen machines available to oxygen users today. 

With the Inogen One G4  you can still do your chores around the house, get around town, take a weekend trip to visit friends and family, or even fly to your favorite vacation spot!

The Inogen One G4 portable oxygen machine is your single solution for oxygen 24/7 whether you are at home or away.

The G4 with the Double Battery weighs a mere 3.29 pounds or 3.41 pounds with the shoulder strap and provides pulse oxygen from 1 to 3 settings. The G4 is available in a package with either the 8-cell extended battery, the 4-cell battery, or you can mix & match battery sizes to suit your lifestyle. Much like your cell phone, the G4 comes with both an AC wall adapter and a DC vehicle adapter which means you can plug the G4 into a power source anywhere. While plugged in, the G4 will recharge the battery, even in your vehicle, making it easy to manage your batteries. On a full charge, the 8-cell Double battery will last up to 4.5 hours at a setting of 2. We offer discounted battery packages if having an extra battery is important to you.  

Additional Battery Configurations Available! Pl
ease call 1-800-958-0192 and we can help customize a G4 package that will work best for you!

The Inogen One G4 portable concentrator is FAA Approved for use on board all major aircraft and is indicated on the label affixed to the concentrator.


  •    Setting 1 - Up to 6 Hours
  •    Setting 2 - Up to 4.7 Hours
  •    Setting 3 - Up to 3 Hours


Inogen One G4 with 8-cell Double Battery Specifications:

Weight - 3.29 lbs

Dimensions - 7.79” H x 2.68” W x 5.91” L

Flow - Pulse 1-3

Power - 100-240 VAC, 50/60 Hz; 11-16 VDC

Warranty - 3 Years Device; 1 Year Columns/Accessories

*Lifetime Warranty Upgrade Optional - Call For Details!*

Inogen G4 Portable Oxygen Concentrator Frequently Asked Questions

Are you an Authorized Inogen G4 Dealer? Yes, we are a Fully Authorized Inogen distributor and can be verified directly on the Inogen website.

How small is the Inogen One G4 portable oxygen concentrator with the 8-Cell Double Battery? The G4 oxygen machine weighs only 3.29 pounds with the 8-Cell double battery and stands just 7.79” H x 2.68” W x 5.91” L. The G4 device is designed to be worn over your shoulder like a camera bag or a purse. Can also be worn around the waist with the optional Hip Bag. Call for Details!

How much oxygen can the G4 oxygen concentrator produce?The Inogen One G4 offers pulse only settings of 1,2 or 3.  

What is the oxygen concentration of the Inogen One G4? The oxygen concentration of the G4 oxygen generator is 90% +/- 3% on all settings. The G4 is equipped with a "Low O2" internal Oxygen Sensor and will alarm should the O2 concentration go below therapeutic range.

Does the Inogen One G4 have an internal battery? The Inogen One G4 POC does NOT have an internal battery. The unit runs off of an external battery cartridge which is easily inserted and disconnected with simple push button operation. Swapping out batteries is quick and simple. 

Can the Inogen One G4 battery cartridge be powered and charged in my vehicle? When connected to your vehicle's DC "cigarette lighter" charging port, your vehicle can power your G4 unit and recharge the battery no matter the battery size. The battery will need to be connected to the unit in order for it to charge. To charge the G4 oxygen concentrator batteries without being connected to the unit, you will be in need of the optional G4 external battery charger.

Is the G4 portable oxygen concentrator allowed on an airplane? Yes. The G4 oxygen machine is FAA approved. Note: Prior To Traveling by Plane: Check with your airline a few weeks in advance regarding their policies for use of Portable Oxygen Concentrators.

Can I use the G4 while resting or sleeping? The G4 oxygen concentrator offers a technology Inogen calls Intelligent Delivery. This smart technology is intuitive and flexible to your changing environments. As your breathing rate slows down, the G4's Intelligent Delivery Technology will increase the size of the oxygen bolus dose. During periods of sleep, the unit has a more sensitive breath detection trigger. This is important in order to detect a more shallow breath. This allows most oxygen users to sleep with the Inogen One G4. The G4 is not recommended for use with a CPAP or BiPAP machine. 

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 Product Reviews

Showing reviews 1-10 of 13 | Next

  1. Free At last

    Posted by Unknown on 2nd Apr 2019

    I got a great deal and even better service. The staff here is wonderful and the most knowledgeable you will find.

  2. Great product

    Posted by Vince B on 28th Dec 2018

    Performs as advertised.quiet and light-weight.
    Car charger great feature.
    Totally satisfied.


    Posted by Charlotte Webster on 21st May 2018

    This INOGEN ONE G4. Has made my life so much easier. I am able to get out without any trouble now. I would recommend this product to any one that is on O2 all the time.
    THANK YOU!!!
    Charlotte Webster

  4. Incredible Product and Service

    Posted by Jennifer and Ann in Tennessee on 27th Mar 2018

    My Mom got put on oxygen when she was discharged from the hospital in January. Prior to that she had not had any health issues... needless to say this was a difficult adjustment for all of us. The home health provider sent over a huge concentrator tank and supplemental tanks for her to take when she left the house. Even the smallest tank was too heavy for her to carry (she weighed about 85 pounds at the time). That's when we discovered the Inogen at Portable Oxygen Solutions. The unit, even with the larger 8 cell battery is easily manageable for her!!!! The staff were beyond helpful when we called them to discuss the unit over several calls. Once we purchased the Inogen that incredible customer service continued over several calls getting a feel for the equipment. I did my homework before purchasing too... Portable Oxygen Solutions had the best price and even had they been a bit more expensive the customer service would have been worth it. Thanks guys!!! You are the best!!!

  5. Compact O2 unit for on the go folks

    Posted by Gery on 26th Mar 2018

    Great compact O2 unit

  6. Works great

    Posted by Sue H. on 19th Mar 2018

    It works very good for me I. I would highly recommend this product, nice people people to deal with.

  7. InogenOne G4 is a Must for home oxygen therapy

    Posted by Unknown on 5th Mar 2018

    Outstanding company to do business with, and Jeff, an honest salesman, convinced me it was unnecessary to spend an additional $300 for a backup battery.

  8. Super Product

    Posted by Rick on 10th Feb 2018

    The unit has been working great. My wife uses it all day as her primary source of O2. She likes if so much better than fighting the hoses all day. The service was great - shipped the same day ordered and the price was great. Jeff answered all our questions, was not pushey and seemed to want us to make best decisions for us even when it ment less money for him.

    Thanks Jeff

  9. It does everything Jeff said it would

    Posted by Joan Krockenberger on 28th Jan 2018

    It is almost unbelievable what this small concentrator can do It is strong enough for home night time use and small enought to always have with you

  10. Tiny Oxygen System

    Posted by Sheryl V. on 9th Jan 2018

    It's really small and lightweight making it really simple for me to leave the house. My friends and I enjoy playing bridge together and this G4 is so simple to take with me. I like wearing it around my waist like a fanny-pack. It's actually fairly quiet, too. I got two of the double batteries to extend my freedom. Best company to do business with. I got best price and great honest answers from Jeff ( the owner). It's his business and you can just tell he cares. Thank you all!

Showing reviews 1-10 of 13 | Next


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