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Inogen One G4 Portable Oxygen Concentrator with DOUBLE BATTERY

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Inogen One G4 Portable Oxygen Concentrator with DOUBLE BATTERY

SKU: AS200-1
Condition: New
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Looking for lightweight portable oxygen? Our Inogen One G4 oxygen concentrator system with the larger 8-Cell Double Battery weighs only 3.29 pounds, offers oxygen flow settings from 1-3, and One Double Life Battery will last up to 6 Hours. INOGEN AUTHORIZED DEALER.
Additional Bundle Packages Available.

Inogen One G4 Model # IS-400-NA8
MSRP: $2948

System Includes:

Double Rechargeable Battery
NEW 2021 G4 Concentrator
3-year warranty
AC/DC power supplies
Carry bag, user manual
Meets FAA requirements
Intelligent Delivery Technology®
Bluetooth System
Inogen Connect App
Lifetime Support
Fed Ex FREE Shipping

Call 1-800-958-0192 or Request Using Form at top of page to View All HOLIDAY FREEDOM SALE PACKAGES!

The Inogen One G4 8- Cell portable oxygen concentrator features some of the best oxygen delivery in its class. It is one of the smallest, lightest, and quietest units on the market. With this powerful oxygen system, you’ll be free to tackle your household chores, go out for a walk, or travel wherever you’d like! Whether you’re home or away, you can count on the Inogen One G4 oxygen concentrator to give you the oxygen you need 24 hours a day, every day.

With the 8-cell battery pack, the G4 unit weighs in at only 3.29 lbs., and provides pulse dose oxygen therapy at settings 1, 2, and 3. You may mix and match battery options to best suit your lifestyle and needs, including the 4-cell single battery or the 8-cell double battery. The G4 unit also comes with both AC and DC power supply, meaning you can use and charge your unit at home, in your vehicle, or anywhere with an outlet. This adaptable feature allows you to make the most of your battery life and enjoy maximum freedom with your oxygen.

The G4 unit, with a fully charged 8-cell battery, will provide 4.5 hours of use at setting 2. If you need greater battery life, additional battery packs may be purchased at a discount. Please call us at 1-800-958-0192 and let us help you customize your G4 portable oxygen concentrator unit package, with the batteries you’ll use most.

Check Out the G4 system packaged with the smaller 4-Cell single battery.

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


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 One G4 Portable Oxygen Concentrator Frequently Asked Questions

Q. Are you an Authorized Inogen One G4 Dealer? A. Yes! Portable Oxygen Solutions is proud to be an authorized dealer for Inogen One and guarantee full warranty coverage.

Q. How small is the Inogen One G4 portable oxygen concentrator with the 8-Cell Double Battery? A. The G4 unit, with the 8-cell double battery measures at 7.79” H x 5.91” L x 2.68” W and weighs a mere 3.3 pounds. For optimal comfort and convenience, you can carry your unit over your shoulder or around your waist or purchase an optional backpack for maximum freedom. Call for Details!

Q. How much oxygen can the G4 oxygen concentrator produce? A.The Inogen One G4 concentrator unit is a pulse dose machine, offering settings 1-3.

Q. What is the oxygen concentration of the Inogen One G4? A. The G4 oxygen machine provides a concentration of 90% +/- 3% on all settings. This unit also features a “Low Oxygen” sensor technology, which sounds the alarm if the O2 concentration dips below therapeutic levels.

Q. Does the Inogen One G4 have an internal battery? A. The Inogen One G4 unit does not include an internal battery but is powered by an external battery cartridge. The battery cartridge system makes for simple and easy use with the push of a button. Changing out your battery units is quick and hassle-free.

Q. Can the Inogen One G4 battery cartridge be powered and charged in my vehicle? A. Yes! Thanks to the adaptability of the G4 unit, you can use and charge it on the go, when connected to your vehicle’s DC power supply (usually the “cigarette lighter” power port). Please note that your batteries must be connected to the G4 unit in order to recharge, and if you want the freedom to charge your batteries elsewhere, we recommend the optional external battery charger.

Q. Is the Inogen One G4 portable oxygen concentrator allowed on an airplane? A. Yes, the G4 oxygen concentrator unit is approved for airline use by the FAA. Please check with your airline prior to your travel dates in regard to their policies around portable oxygen concentrators.

Q. Can I use the Inogen One G4 while resting or sleeping? A. Yes, the G4 portable oxygen system can be used while resting and sleeping for most people. Although it is not recommended for use with CPAP or BiPAP machines, the internal technology of the G4 unit allows for optimal oxygen delivery whether you’re active or at rest. The Intelligent Delivery Technology tailors the dose of oxygen, based upon your breathing rate, offering intuitive and flexible oxygen therapy no matter what you’re doing. You can count on the sensitive breath detection technology in the G4 portable oxygen concentrator, to give you the level of oxygen you need while at rest.


3 Year Standard Warranty; Lifetime Warranty Available – Call for Package Details! **A valid prescription is required for the purchase of this product.







Inogen One G4
Posted by Reginald Rhein on 29th Jul 2021

“Everything works as advertised.”


So Small
Posted by Patricia on 16th Apr 2020

“I am impressed with how small my new G4 really is. I guess it only weighs about 3 to 4 pounds. I am able to carry the G4 anywhere I go and that's very nice and a big difference from the tanks I had. I am very satisfied that I got the g4 from you and thanks for the discounted price!”


Iogen one g4 portable
Posted by Joyce S on 18th Sep 2019

“Very happy with this product so far. I purchased this for my mother who needed oxygen to walk to lunch room and back. The Inogen one g4 portable with a double battery enables her to do this comfortably. One thing that should be considered is that this device has oxygen flow settings 1 through 3; the higher the setting, the less time the battery will last before recharging. In her case, she gets about 2 hours for a double battery. You can purchase additional battery power but that will add more weight to the concentrator.”




Quality & Portability in One

We Work with and Supply a Number of Trusted Brands

We work with only the most trusted manufacturers and carry only oxygen machines that are known to perform well. Our lineup features top brands for our customers, including but not limited to Rhythm Healthcare, Belluscura, Inogen, O2 Concepts, Caire, and Philips Respironics.


8000 Corporate Center Drive
Suite 113
Charlotte, NC 28226

Business Hours

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