Used Inogen One G3

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Used Inogen One G3

The Inogen G3 is one oxygen machine that is new to the industry.  We plenty of used concentrators for sale. We service the concentrators, clean the machines internally and externally before shipping. 

What is included:

-Used Inogen One G3 - Serviced - Great Working condition (all tested and serviced within the last 3 months)
-AC Power Adapter
-DC Power Adapter
-Standard 8-Cell Battery
-Shoulder Strap
-Carry Bag
-Oxygen Cannula (Nasal Tubing)
-User Manual
-3 Month Warranty

Pelican Hard Case may be added for an additional $200

The Used Inogen One G3 is a portable oxygen concentrator that weighs only 5.25 pounds, including the standard battery and carry case. The lightweight and small design of the G3 Concentrator allows freedom and independence. This portable oxygen concentrator can be used for stationary oxygen, portable oxygen and for traveling. Approved by the FAA for airline travel, the Inogen G3 Concentrator is can be powered from three separate power sources. These power sources include a rechargeable lithium ion battery, AC power from your home or office, or DC power from your car, boat, or RV. The AC power supply is auto sensing, allowing worldwide use when traveling. The oxygen flow is pulse dose with five settings from 1 to 5. Oxygen concentration levels are from 87 to 96 percent with a maximum flow of 840 mL. Noise output is a modest 39 decibels. The G3 Oxygen Concentrator is 24/7 capable for both day and night while on extended vacations.


Weight 4.8 lbs w/ 8-cell battery
Dimensions 3 W x 8.75 L x 7.25 H inches w/ 8-cell battery
Oxygen Concentration 90% - 3% / + 6% at all settings Pulse Flow
Operating Temperature:
41-104ºF (5-40ºC)
Operating Altitude 0 to 10,000 feet (0-3048 meters)
Operating Humidity Up to 95% Relative Humidity
Alarms: Battery Low, O2 Service Soon, Check Battery, Oxygen Low, Remove Battery, Communication Error, Service Needed, Oxygen Sensor Failure, No Breath Detected, Oxygen Error, Oxygen Delivery Error, System Error, Battery Hot, Battery Empty, System Hot, System Cold
FAA Approved - This concentrator is FAA approved.




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 Weight 16-Cell: Approximately 3.00 lbs
Battery Run Times (Average)

8-Cell: Duration 3.5 - 4.0 hours
16-Cell = Duration 7.0 - 8.0 hours

May vary depending on the liter flow setting

Battery Recharge Times (Average) 8-Cell:   3.0 - 4.0 Hours
16-Cell: 7.0 - 8.0 Hours (INCLUDED)