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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
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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

Inogen One G4 Portable Oxygen Concentrator - 8-CELL DOUBLE BATTERY
Pulse 1-3 | 3.29 Pounds | FAA Approved | 6 Hour Extended Battery | 24/7 Use | Car Charger

Who can use the Inogen G4 8-Cell portable oxygen concentrator?  Anyone who requires an oxygen device which can deliver 1 to 3 Pulse Settings of supplemental oxygen 

Additional Battery Packages & Warranty Upgrades Are Available!

Customize a G4 package that works best for you and your budget.
Must Call 1-800-958-0192 For Details.



What Accessories come with your INOGEN ONE 8-Cell G4 PORTABLE OXYGEN CONCENTRATOR:

  • Inogen One G4 Portable Oxygen Machine

  • (1) 8-Cell Extended Double Battery

  • DC (Vehicle) Power Supply

  • AC (Wall) Power Supply

  • Protective Portable Carrying Case

  • Comfortable to Wear Shoulder Strap

  • Cannula/tubing

  • User Manual

  • 3 Year Warranty Concentrator 

                     **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 purchase. 

With the Inogen One G4  8-Cell 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 8-cell 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 adaptor and a DC vehicle adaptor 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 extended 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! Please call 1-800-958-0192 and we can help customize a G4 package that will work best for you!

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

 Inogen G4 Battery Runtime



4-Cell Battery Run Time

8-cell Battery Run Time

Setting 1.0


3.0 hours

6.0 hours

Setting 2.0


2.0 hours

4.5 hours

Setting 3.0


1.25 hours

2.5 hours


Inogen One G4 Portable Oxygen Concentrator with 8-cell Extended Battery Specifications:


8-Cell Battery: 3.29 Pounds (3.41 pounds with Strap)


7.79” H x 2.68” W x 5.91” L

Flow Rate

Pulse Settings 1-3

Battery Life

8-Cell Extended Battery: Up to 6 Hours (Setting 1)


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

FAA Approved



3 Years


Inogen G4 Portable Oxygen Concentrator Frequently Asked Questions

Are you an Authorized Inogen G4 Dealer?

Yes, we are an 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 Extended 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. 

What is packaged with the Inogen One G4 Extended battery system?

System Includes: G4 Concentrator unit, (1) 8-cell Battery, AC Power Supply, DC Power Cable, Carry Bag, User Manual, 3 year Warranty.

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. 

How long with the Inogen One G4 batteries last at each setting?

 Flow Setting


4-cell run time

8-cell run time

Setting 1.0


3.0 hours

6.0 hours

Setting 2.0


2.0 hours

4.5 hours

Setting 3.0


1.25 hours

2.5 hours

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 11 | Next


    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

  2. 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!!!

  3. Compact O2 unit for on the go folks

    Posted by Gery on 26th Mar 2018

    Great compact O2 unit

  4. 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.

  5. 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.

  6. 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

  7. 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

  8. 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!

  9. Incredibly Small

    Posted by Helen N. on 20th Oct 2017

    So small and easy for me to carry. I can't carry anything too heavy over my shoulder and this works great. I did take your advice and wear it around my waist like a waist pack and that works really nicely too. Jeff took so much time with me answering my questions and I am very grateful. Great company and great product.

  10. Simply to Carry

    Posted by Carolyn I. on 29th Mar 2017

    This unit is fantastic! it's on 3 1/2 pounds and very quiet. I purchased two batteries which gives me plenty of freedom to do the things I enjoy. I simply pick it up and walk out the door. it's smaller than my purse

Showing reviews 1-10 of 11 | Next


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