We're Happy To Help - Call 888-505-0212
Why Shop DirectHomeMedical.com? Free Shipping Over $99 View Shopping Basket

Inogen One G2 Portable Oxygen Concentrator (DISCONTINUED)

  • For Reference Only - Discontinued April 2013

This product is one of the many products we offer that are proudly made and manufactured in the USA!

We stock a wide range of parts, filters and accessories. Click here to view replacement parts for this product.

Smaller, lighter, quieter, and more powerful than the original the InogenOne G2 (Generation 2) is the ultimate portable pulse dose oxygen concentrator! At just 4 x 11 x 9.5 inches and 7.25 lbs WITH battery it's small enough to hold in your hand. With 4 and 8-hour battery packs available the InogenOne G2 provides unparalleled freedom for active oxygen users.

Don't be deceived by its size though, the InogenOne G2 produces 20% more oxygen than the original and is available with upgraded 4-hour (12-cell) or 8-hour (24-cell) battery packs for added freedom.

The InogenOne G2 pulse dose oxygen concentrator can be used at home, in the car, or in the air -- you can use it just about anywhere. It is FAA approved for use on all commercial flights in and out of the United States. Why worry about oxygen tanks, deliveries, or refills? Upgrade to the InogenOne G2 and leave oxygen hassles behind.

The InogenOne G2 is light enough to carry in your hand, but it also comes with a handy carry bag -- with shoulder strap -- and a travel cart too so it's easy to take with you wherever you go.


  • Regain Your Independence - With a greater ability to come and go at will, InogenOne G2 users can enjoy more freedom and independence.
  • So Quiet - One of the quietest oxygen devices available at less than 38 dba, most people don't notice that the InogenOne G2 is on.
  • Small and Lightweight - At approximately 4 x 10 x 9.5 inches the InogenOne G2 is 42% smaller than the original Inogen One. It is also 25% ligher, weighing only 7.25 lbs WITH the battery. The InogenOne G2 is easy to transport and unobtrusive making it convenient in the home or on the go.
  • Powerful Performance - InogenOne G2 delivers 20% more oxygen (900 ml/minute) than previous models and it delivers oxygen faster and at the most advantageous times too.
  • Surprising Energy Efficiency - The Inogen One uses about as much power as a 40-watt light bulb. With the 12-cell battery the InogenOne G2 will last up to 4-hours per charge. With the 24-cell battery it will last up to 8-hours per charge.
  • Guaranteed Reliability - The InogenOne G2 carries a standard 3-year manufacturers warranty and a compressor that is built to last 25,000 hours. Batteries are warrantied for 1-year
  • Easy Operation - With simple digital controls the Inogen One is easy to use, creating greater independence for you, your provider, and your physician.
  • FAA Approved! - The InogenOne G2 has been approved by the FAA for use on all airlines operating within the United States



  • Can the INOGEN ONE G2 be taken onboard commercial aircraft?
    Yes, the INOGEN ONE G2 is approved by the FAA for use onboard all commercial aircraft operating within the United States; as well as all commercial aircraft flying into or out of the US. Always check with your airline before you fly to see what regulations they may have for travelling and using your oxygen concentrator onboard -- generally a copy of your prescription and/or a letter of medical necessity will be required.

  • Can the INOGEN ONE G2 be used in my car/boat/van/trailer?
    Restoring your freedom and control of your day is a big part of what makes the INOGEN ONE G2 so special. You can power your INOGEN ONE G2 by plugging it into any standard wall outlet or the "cigarette style" DC outlet found in most vehicles. It will also run for hours at a time with the included battery. So go ahead, jump in the car to run errands or take a weekend trip to see family. Come and go as you want without having to switch equipment. Or take that long trip you thought you’d never again have the chance to take. The INOGEN ONE G2 is made to follow you anywhere, whether it’s around town, on the road, on a cruise, or in the air. Where you go is now up to you! Each INOGEN ONE G2 package comes complete with a universal AC power supply for use in wall outlets worldwide (a plug adapter may be needed for use outside of North America), a DC power supply for use in most vehicles, and a standard 12-cell battery.

  • How long does the INOGEN ONE G2 battery last?
    There are two types of INOGEN ONE G2 batteries. The standard 12-cell battery will last up to four hours when fully charged. The optional 24-cell battery will last up to eight hours when fully charged (Fly from New York to London on one battery!). If your concentrator is being used at a higher flow setting, such as 4 or 5, overall battery time will drop by approximately 25%.

  • Can the INOGEN ONE G2 battery be recharged in a car or an airplane?
    Whenever the INOGEN ONE G2 is plugged in to a power source, whether that be a standard wall outlet or the "cigarette style" outlet found in most vehicles, the INOGEN ONE G2 battery will charge. Due to power limitations, the Universal Power Supply cannot be used to charge the Inogen One G2 battery when onboard most commercial airlines.

  • Will using the INOGEN ONE G2 decrease my electric bill?
    If you are currently using a stationery oxygen concentrator at home then the INOGEN ONE G2 is likely to reduce your overall electric bill.

  • Is the INOGEN ONE G2 pulse dose? Can I use it at night?
    The INOGEN ONE G2 is designed to be used 24 hours a day, 7 days a week, even during the night. It is a pulse dose concentrator, but it uses new pulse dose technology specially designed for continuous use. The INOGEN ONE G2 is clinically proven to provide the necessary oxygen for most ambulatory patients during all phases of daily activity and during sleep.

  • Is the INOGEN ONE G2 easy to use?
    Technology not only makes the INOGEN ONE G2 smaller and lighter, it makes it easier to operate too. Just a couple of buttons. That’s it. There are no regulators to switch or liquid oxygen freeze-ups. Once you try it, you’ll wonder why anyone would use something else. The INOGEN ONE G2 is designed to make life easier and more active. You'll be amazed at the freedom it provides.

  • Really how small is the INOGEN ONE G2?
    The INOGEN ONE G2 measures approximately 4 x 10 x 9.5 inches fits virtually anywhere. You can reclaim that room in your home occupied by a noisy concentrator, spare oxygen tanks, or a large liquid oxygen reservoir. The INOGEN ONE G2 can sit discreetly at your feet, beneath an airplane seat, behind a chair, next to the bed, or over your shoulder. All of your oxygen needs can be met with this one small device - day or night, home or away.


Earn points for every dollar you spend. Cash in points you've earned for big discounts on future orders. Learn More About Customer Rewards

Manufacturer Inogen
In The Package InogenOne G2 Portable Oxygen Concentrator, Carrying Case, Rechargeable Battery (12 or 24 Cell), Mobile Cart, Universal AC & DC Power Supply, Two Salter 1600 Cannulas with 7-Foot Supply Tubing, 3-Year Manufacturer's Warranty, and Printed User Guide. Additional Batteries and Options included depending on selections during checkout.
Part Number(s) IS200
HCPCS Insurance Code E1390 E1392
Typical Country of Origin United States of America

Weight 7.25 lbs WITH 12-cell battery
8.50 lbs WITH 24-cell battery
Dimensions 4 W x 10 L x 9.5 H inches WITH 12-cell battery
4 W x 10 L x 10.5 H inches WITH 24-cell battery
Oxygen Concentration 90% - 3% / + 6% at all settings
Oxygen Capacity 900 ml/min Pulse Dosed
Operating Temp. 41-104F (5-40C)
Operating Altitude 0 to 10,000 feet (0-3048 meters)
Operating Humidity Up to 95% Relative Humidity
Audible Visual Alerts Low Power, High Power, Battery Low, Battery Error, Oxygen Low, Remove Battery to Cool, Comm Error, Service Needed, O2 Sensor Fail, Battery Hot, No Breath Detected, System Error, Oxygen Error, Battery Empty, System Hot, System Cold
FAA Approved Approved by the FAA for use on all commercial flights within the US and all international flights that depart or arrive in the US. Each InogenOne G2 carries an FAA APPROVED label for easy identification. Click here for information from the FAA on travelling with oxygen. Always contact your airline prior to your flight to confirm any requirements they may have -- such as a copy of your prescription and/or a letter of medical necessity -- for allowing your concentrator on board.

Flow Settings 1.0 to 5.0 Intelligent Delivery Technology
Oxygen Conserver Night Enabled
Typical Sound Levels 38 dB(A)
Tubing / Cannula Length Up to 25-feet

Universal AC/DC Power Supply AC power 100-240V, 50-60Hz (auto sensing to allow worldwide use); DC power for mobile DC use in car / boat / rv, etc.
Battery Type Lithium Ion (Li-Ion)
Battery Weight 12-Cell = Approximately 1.75 lbs
24-Cell = Approximately 3.00 lbs
Battery Run Times (Average) 12-Cell = Duration 3.5 - 4.0 hours
24-Cell = Duration 7.0 - 8.0 hours
Higher flow settings will reduce battery life.
Battery Recharge Times (Average) 12-Cell = 4.0 Hours
24-Cell = 8.0 Hours
Battery Care For battery care guidelines refer to your InogenOne G2 manual. If using multiple batteries, make sure that each battery is labeled (1, 2, 3 or A, B, C, etc.) and rotated on a regular basis. Batteries should not be left dormant for extended periods of time. Store batteries in a cool, dry place. Store with a charge of 40-50%. For optimum performance, once per month: Fully charge the battery then discharge to 10%, then charge back to full. Remove battery from the Inogen One G2 when not in use for extended periods.

Concentrator 3-Year Manufacturer's Limited Warranty
Battery Pack 1-Year Manufacturer's Limited Warranty
Inogen One G2 Portable Oxygen Concentrator (DISCONTINUED)

5 out of 55 out of 55 out of 55 out of 55 out of 5
External Battery Charger with AC Power Cord for Inogen One G2 Portable Oxygen Concentrators
Inogen - BA-203

5 out of 55 out of 55 out of 55 out of 55 out of 5
24-Cell Rechargeable Lithium Ion Battery for Inogen One G2 Portable Oxygen Concentrators
Inogen - BA-224 (24-Cell Battery), BA-200 (12-Cell Battery) Discontinued

4 out of 54 out of 54 out of 54 out of 54 out of 5
21-Foot CLEAR Crush Resistant Multi-Channel Lumen Oxygen Supply Tubing
AirLife - 001304
4 out of 54 out of 54 out of 54 out of 54 out of 5
Salter-Style 1600 (Original) Nasal Cannula with 7-Foot Oxygen Supply Tubing
Salter Labs - 1600
5 out of 55 out of 55 out of 55 out of 55 out of 5
Go2 Achieve Fingertip Pulse Oximeter
Nonin Medical - 7073-008 (Blue Go2 Achieve), 7073-009 (Orange Go2 Achieve), 7073-011 (Green Go2 Achieve)
> Click Here To View Compatible Parts

5 out of 55 out of 55 out of 55 out of 55 out of 5
Inogen One G2 review
Written By: Don P, Sun City, AZ 3/25/2013
Even though I have had the equipment for only a short time, it appears to do the job that I expected of it. Looking forward to our next air flight but none is scheduled in the near future. I am glad that I purchased the backpack carrying case with two straps as it would be very uncomfortable carrying it in the case with only one strap, especially with carrying an extra battery in the case.

5 out of 55 out of 55 out of 55 out of 55 out of 5
love the machine
Written By: Papaw's helper, Tampa Bay FL 9/29/2012
My husband felt trapped with this disease until we purchased this machine. He got the 24 cell battery, but he wants the 12 cell also....ANYTHING that gives him comfort or peace of mind is worth it....He is back to being active and positive...Which is such a blessing!!

5 out of 55 out of 55 out of 55 out of 55 out of 5
Working to recover
Written By: Thomas G., Las Vegas, NV 7/21/2012
I have 3 large oxygen concentrators, and a collection of oxygen bottles, none of which gives me much freedom. I cannot fly because of my respiratory condition and attempting to travel with a large concentrator is very difficult. Now with the Inegen G2 and the backpack I can go shopping, take long walks, attempt to regain my strength and consider traveling.

5 out of 55 out of 55 out of 55 out of 55 out of 5
Easy to Navigate: Inogen One G2 Portable Oxygen Concentrator
Written By: Gloria Tufft, Vacaville 5/16/2012
I have been on oxygen therapy for an unusual lung disease for thirty-five years, and am now on full-time oxygen therapy. the Inogen One G2 portable is just right for me. At eighty-four and frail, I can actually lift the equipment as well as wheel it about, just what I was looking for, and it works perfectly. It is everything I had hoped for. I give it five stars.

View Popular Sleep, Oxygen & Asthma Therapy Search TermsDiscontinued Items


We Ship UPS We Ship US Postal Service MasterCard Accepted American Express Accepted Discover Card Accepted PayPal Accepted

DirectHomeMedical offers online support through our website, live chat and toll free support during normal business hours, and email support 24-hours a day. Please contact us if you have any questions about our services or the products we sell. DirectHomeMedical.com is authorized and approved, by the manufacturers we represent, to sell and ship products to end-users residing in the United States, not to other third parties or businesses. A prescription is required for the purchase of certain products on this site. All products offered are sourced directly from the original equipment manufacturers or their representatives. PROPOSITION 65 WARNING: Some products on this site may contain a chemical known to the State of California to cause cancer, birth defects or other reproductive harm. COPYRIGHTS: Selected product images and descriptions used throughout this site are used with the permission of the copyright holders. All ResMed Product Images © ResMed. All Philips Respironics Product Images © Philips Respironics. All Fisher & Paykel Healthcare Product Images © Fisher & Paykel Healthcare. Site Design & Content Copyright © 2004-2016 DirectHomeMedical.com. Respironics recommends that new patients purchase their devices, masks and initial accessories from a homecare company that can provide an individualized patient equipment set-up, clinical and after-sale support, and a program to assist patients with therapy success. All products and services advertised on this site are provided by DirectHomeMedical.com or its designates.
Privacy Policy & Terms of Use | Return & Exchange Policy | Call Toll Free 888-505-0212 | Fax 603-386-6277