Inogen One G4 Portable Concentrator

By Inogen
MINIMUM Allowed Advertised Pricing $2,744.00 List Price $3,999.00

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  • Pulse Dose
  • 2.8 Pounds (with Single Battery)
  • 1/2 the Size of the G3
  • Up to 2.25 Hour Battery Life (4 Cell Battery, Setting of 2)
  • Includes the G4 unit, single battery, AC power supply, DC power cable, carry strap, carry bag, cannula and manual.

Inogen One G4 Portable Concentrator Description

Introducing the smallest portable oxygen concentrator from the most popular brand, Inogen. The Inogen One G4 is capable of providing oxygen delivery in an unbelievable small and quiet package. With flow settings from 1-3, the Inogen One G4 is designed to increase independence for most users 24/7. It can be charged at home or on the go - giving you the freedom you deserve.

The Inogen One G4 provides you with three separate oxygen flow settings. It also includes Inogen’s Intelligent Delivery technology, which sets it apart from the competition. This innovative system rapidly detects a breath and delivers oxygen in the first 400 milliseconds. This is critical because this period is when the most gas exchange occurs in the lungs. Delivering oxygen at the start of a breath ensures that the oxygen is used more efficiently by your body.

At only 40 decibels, the G4 produces less noise than a normal indoor conversation. This means you won’t disturb others when you use your oxygen concentrator and will feel more comfortable in social settings. It’s also great in quiet environments when you want to be unobtrusive.

Furthermore, Intelligent Delivery accurately detects your breathing rate and adjusts the oxygen level provided accordingly. If you’re exercising or physically active, the unit will provide smaller, quick bursts of oxygen to satisfy your energy needs. However, during rest or sleep, the system provides larger oxygen boluses more slowly to correspond with your decreased rate of respiration. This means the G4 can effectively be used during sleep at night, an area where many other portable oxygen concentrators fall short. With the G4, you won’t need separate oxygen systems for the day and night.

The Inogen One G4 comes with a 3-year warranty covering the concentrator. There’s also a 1-year warranty that covers the sieve beds and accessories, so your entire system is protected. The starter package comes with the Inogen G4 unit, single battery, AC power supply, DC power cable, carrying bag, cannula, and manual.

We also provide the Inogen One G3 Wearable Concentrator.

Inogen One G4 Highlights

Inogen One G4 - Smallest Portable Unit
Smallest Portable Unit
Inogen G4 is the smallest portable oxygen concentrator that can be used 24/7. It can deliver oxygen in the range of 1-3 settings.
Inogen One G4 Wearable Technology
Wearable Technology
Weighing only 2.8 pounds with a single battery, Inogen G4 is the lightest concentrator you can carry.
Inogen One G4 Connect Mobile App
Connect Mobile App
The G4 is compatible with the Inogen Connect mobile app which helps you monitor your device more closely. You can check battery life, column status, cannula life, and many more.

What’s Included with the G4

Inogen One G4 Unit (IS-400)
G4 Unit (IS-400)
Inogen One G4 Small 4-Cell Lithium Battery  (BA-400)
Small 4-Cell Battery (BA-400)
Inogen One G4 Custom Carrying Bag (CA-400)
Custom Carrying Bag (CA-400)
Inogen One G4 Carry Strap (CA-401)
Carry Strap (CA-401)

Inogen One G4 AC Power Supply (BA-401)
AC Power Supply (BA-401)
Inogen One G4 DC Power Cable (BA-306)
DC Power Cable (BA-306)
Inogen One G4 Nasal Cannula
Nasal Cannula
Inogen One G4 Manual
G4 Manual

More Information
GTIN 00817131020179
Product Features Designed for full time usage; 24/7
Quiet operation at only 40 decibels
Single battery lasts up to 2 hours 40 minutes and extended battery can go up to 5 hours
FAA Approved
Manufacturer Inogen
Dimensions 5.91 inches Wide x 2.68 inches Long x 7.2 inches High (includes single battery)
Product Weight 2.8 pounds with single battery, 3.3 pounds with double battery
FAA Approved Yes
Warranty Three Year Standard Warranty**
Battery Charging Time Single Battery: Approximately 3.25 hours with AC or DC power
Double Battery: Approximately 6 hours with AC or DC power
Battery Duration Setting of 1
4 Cell Battery: 2 hours 40 minutes, average
8 Cell Battery: 5 hours, average

Setting of 2
4 Cell Battery: 2 hours 15 minutes, average
8 Cell Battery: 4 hours 30 minutes, average

Setting of 3
4 Cell Battery: 1 hours 20 minutes, average
8 Cell Battery: 2 hours 30 minutes, average
Flow Settings Pulse Dose Delivery: Three flow settings - 1, 2, 3
Noise Level 40 decibels at a 3.0 pulse dose setting (Quiet conversation)
Power Consumption AC Power Supply 100-240V, 50-60Hz (auto sensing to allow worldwide use)
DC Power Cable: for mobile use in car
Operating Ranges, Intended for Use Temperature: 41 - 104 Fahrenheit (5 - 40 Celsius)
Humidity: 0% to 95%, non-condensing
Altitude: Up to 10,000 feet (3048 m)
Atmospheric Pressure: 700 hPa to 1010 hPa
Storage Ranges, Intended for Storage Temperature: -13 - 158 Fahrenheit (-25 - 70 Celsius)
Humidity: 0 to 95%, non condensing
Altitude: 0 to 10,000 ft (0 to 3048 meters)
Store in a dry environment
User Interface Simple control functions and easy-to-read LCD display
Items in the Box Includes the G4 unit (IS-400), single lithium ion battery (BA-400), custom carry bag (CA-400), carry strap (CA-401), AC power supply (BA-401), DC power cable (BA-306), cannula and user’s manual (RP-311).
Inogen One G4 Portable Concentrator Videos
Inogen One G4 Portable Concentrator Literature
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General Questions
What are the dimensions of the Inogen G4?
Here are the dimensions in inches and metric form for the Inogen One G4 portable oxygen concentrator: Inches: 5.91 inches Wide x 2.68 inches Deep x 7.2 inches High. Metric: 15 cm Wide x 6.8 cm Deep x 18.3 cm High.
What is the Inogen One G4 cost?
The Inogen One G4 Portable Oxygen Concentrator was released in May 2016, and pricing is based upon batteries, accessories and warranty length. Pricing for the Inogen G4 Basic Package...
How loud is the Inogen One G4?
The average volume on a setting of 2 for the Inogen One G4 portable oxygen concentrator is a modest 40 decibels, about the equivalent of a quiet conversation. Learn more about
How much does the Inogen G4 weigh?
The >a href="">Inogen One G4 weighs only 2.8 pounds, making it the smallest portable oxygen concentrator (POC) offered by Inogen. The double battery adds about half a pound to the weight...
Is there a lighter option than the Inogen G4?
The Inogen G4 is currently the lightest portable concentrator on the market.
Does the Inogen G4 have a warranty?
There is a 3-year warranty on the unit, 1-year warranty on batteries and 90-days on all other accessories.
How much oxygen will the Inogen G4 deliver?
The Inogen One G4 provides up to 630 milliliters (ml) per minute with pulse dose settings 1-3. Like all pulse dose POCs, this unit delivers a bolus, or dose, of oxygen with each...
Will the Inogen G4 work for me if I need a setting of 4 or higher?
We do not recommend the Inogen G4 for use higher than a 3 on pulse flow. Please reach out to our experienced oxygen consultants to help you find a machine to fit your needs.
Can I take the G4 be used the a plane or aircraft?
Yes. The unit is FAA approved to be operated aboard all commercial aircraft whose flights that depart or land within the United States.
How long will the batteries last with the Inogen G4?
Inogen One G4 battery duration is up to 2.6 hours with single battery and up to 5 hours with double battery. Durations listed below are averages, not exact measurements. Setting of 1: 2 hours 40 minutes with the small and 5 hours with...
Can the Inogen One G4 be used at night?
Yes. Most people can use the Inogen One G4 at night. This portable oxygen concentrator (POC) uses Inogen’s Intelligent Delivery Technology to detect your breathing...
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