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Home > Oxygen Concentrators > Portable Oxygen Concentrator > Inogen One G4 Portable Oxygen Concentrator (Pulse Dose)
Inogen One G4 Portable Oxygen Concentrator (Pulse Dose)Inogen One G4 Portable Oxygen Concentrator (Pulse Dose)Inogen One G4 Portable Oxygen Concentrator (Pulse Dose)Inogen One G4 Portable Oxygen Concentrator (Pulse Dose)Inogen One G4 Portable Oxygen Concentrator (Pulse Dose)Inogen One G4 Portable Oxygen Concentrator (Pulse Dose)Inogen One G4 Portable Oxygen Concentrator (Pulse Dose)youtube videoYouTube Video

Inogen One G4 Portable Oxygen Concentrator (Pulse Dose)

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Inogen One G4 Portable Oxygen Concentrator

Compact and ultra-lightweight, the Inogen One G4 Portable Oxygen Concentrator brings the ultimate mobility into the world of oxygen therapy. At only 2.8 pounds and roughly 6 inches in length, this game-changing device is easy to transport, letting you stay on top of your treatment in and out of your home. 


  • Pulse dose therapy with 3 flow settings
  • Lightweight at only 2.8 lb
  • Up to 2.7 hours (single) or 5 hours (double) battery duration 
  • Quiet operation at only 40 dBA
  • FAA-approved
  • Designed for 24/7 use
  • Backlit LCD screen with audible and visual alarms
  • Inogen Connect app for monitoring device status
  • Auto-sensing AC power supply for worldwide use and DC power adapter for use on-the-go

Weight and size aren’t the only things that make the G4 concentrator the perfect travel companion. This FAA-approved machine is rated at only 40 decibels (at flow setting 2) for a truly library-quiet operation. What’s more, it can provide up to 2.7 hours of continuous use at flow setting 1 with the G4 single battery or up to 5 hours with the G4 double battery.

Monitoring the battery life, current flow setting, and maintenance schedule is easy, thanks to the G4’s user-friendly interface and compatibility with the Inogen Connect app. The device also features intelligent pulse dose delivery technology, so you can breathe easier and enjoy energy-efficient oxygen therapy on the go. 


How many liters of oxygen does the Inogen G4 produce?
The Inogen One G4 delivers 210 ml/min at flow setting 1, 420 ml/min at flow setting 2, and 630 ml/min at flow setting 3, providing 87% to 96% pure oxygen at all settings.

How do I charge the Inogen G4 battery?
To charge your G4 battery, plug the concentrator into a wall outlet using the dual-voltage G4 AC power supply or a car charging port using the G4 DC power adapter. You also have the option to charge the batteries separately with the Inogen G4 External Battery Charger (sold separately).

How do I connect the Inogen G4 to the Inogen Connect app? 
Please follow the instructions in the Inogen Connect: Getting Started Guide. The provider code you’ll need to connect the machine to the app is 30-F80-11-222.

Can I leave the Inogen G4 plugged in all the time?
Yes. You can safely leave the Inogen One G4 plugged in even with fully charged batteries, ensuring uninterrupted oxygen therapy during power outages. 

Can I use the Inogen G4 at night?
Yes, the Inogen One G4 is designed for 24/7 use and can be used while sleeping. Its Intelligent Dose Delivery Technology increases the amount of oxygen in each pulse as breathing rate slows.

Can I use the Inogen G4 with a CPAP or BiPAP?
The Inogen G4 is not designed to be used with CPAPs, BiPAPs, nebulizers, or humidifiers. Using these devices with the G4 can interfere with the proper functioning of your Inogen concentrator.

Is the Inogen One G4 approved for air travel?
Yes. The Inogen One G4 is FAA-approved for commercial air travel. Inogen recommends bringing enough batteries to last 150% of your flight duration, as well as ground time and unexpected delays. Make sure to wrap extra batteries individually and store them in your carry-on baggage.

Check with your airline to find out their specific requirements at least 48 hours before your flight. If they offer onboard electrical power, remove the battery from the concentrator first and plug it into the aircraft in-seat power port using the G4 DC power adapter.

What is the warranty period for the Inogen One G4 Concentrator?
The Inogen One G4 comes with a 3-year standard warranty. The sieve beds, batteries, and other accessories are covered by a 1-year limited warranty. 

Battery Duration

Fully charges in up to 3 hours (single battery) or 5 hours (double battery). Battery durations listed below are approximate values: battery life is affected by numerous factors such as temperature, battery age, altitude etc.

Setting 1
Single Battery: 2 hours 40 minutes
Double Battery: 5 hours

Setting 2
Single Battery: 2 hours 15 minutes
Double Battery: 4 hours 30 minutes

Setting 3
Single Battery: 1 hour 20 minutes
Double Battery: 2 hours 30 minutes

IS-400-NA, IS-400-NA8
E1390, E1392
AC Input
100-240 VAC, 50/60 Hz
AC Power Supply
100-240V, 50-60Hz (auto sensing for worldwide use)
Power Cord Length
AC: 12 ft 10 in (approx), DC: 7 ft 8 in (approx)
DC Converter
Included, 13.5-15.5V, 10A Max
Battery Option
Single (4-cell), Double (8-cell)
FAA Approved
Altitude Adjustment
Up to 10,000 Feet
3 Years Machine, 1 Year Battery and Accessories
Sound Level
40 dBA at setting 2
Carrying Case
Expected Service Life
5 Years
Reusable Particle Filter, Output Filter
Operating Modes
Pulse Dose 1-3
Battery Recharge
Up to 3 hrs for Single Battery; Up to 5 hrs for Double Battery
Battery Duration
Single Battery: up to 2.7 hrs; Double Battery: up to 5 hrs
(LxWxH) With Single Battery: 5.91" x 2.68" x 7.20", With Double Battery: 5.91" x 2.68" x 7.79"
Oxygen Flow
Pulse dose settings 1-3 (up to 630 ml/min); Oxygen purity: 87% to 96% at all flow settings
Smartphone App
Inogen Connect (Android/iOS)
UPC Code
00817131020117, 00817131020117
With Single Battery: 2.80 Lbs, With Double Battery: 3.25 Lbs
  • Inogen G4 Portable Oxygen Concentrator
  • Rechargeable Battery (single or double)
  • AC Power Supply
  • DC Power Adapter
  • Carrying Bag
  • User Manual
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Posted: 11/15/2021
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