Inogen One G4 Portable Oxygen Concentrators


Inogen One G4 G4 is the most recent addition to the lightweight, portable oxygen concentrator market. The Inogen One G4 delivers the independence of a portable oxygen concentrator in one of the smallest, lightest, and quietest bundles available to the oxygen consumer now.

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SKU: Inogen One G4 Categories: ,

What is Inogen One G4?

The Inogen One G4 is one of the most basic portable oxygen concentrators aka POC in the market. Inogen, in particular, has created a niche for manufacturing some of the best and the lightest Respiratory oxygen therapy products, and the G4 is no exception. The Inogen One G4 is a line of product from Inogen that works as an external oxygen provider for those patients who have problems with oxygen intake capacity. It provides the simplest and the best alternative to replace the bulky and highly inconvenient oxygen cylinders.

Overview of the Inogen One G4

The Inogen One G4 is a compact and extremely lightweight oxygen concentrator. The whole unit of the Ingoen One G4 weighs only about 2.8 pounds which is approximately about 1.27 kg. This makes the Inogen One G4 one the lightest POC products available anywhere, and across all other segments as well. The weight increases to 3.3 pounds (1.5 kg) if one decides to go with the option to obtain the double battery. But, even after the addition of a double battery, the Inogen One G4 is lighter than any other POC products.

Due to its lightweight feature, it is of the simplest job to carry it around anywhere with minimal difficulty, especially with the carry bag that they provide along with the unit.

The battery life of the Inogen One G4

The battery of the Inogen One G4 comes in two different options-the standard 4-cell battery and the extended 8-cell battery. The standard 4-cell battery can give the maximum backup duration of up to 2 hours 15 minutes (on setting 2) and up to 4 hours 30 minutes on extended 8-cell battery (also on setting 2). The backup duration of both the standard as well as extended batteries is both quite average and suitable for taking it out for a quick stroll.

Working of the Inogen One G4

The Inogen one G4 operates on three different pulse flow mode settings. Even though the settings seem limited, the addition of the intelligent delivery technology that Inogen makes use of more than make up for that restriction in settings. The three different settings are only available on pulse dose mode, and not on concentrated flow mode, but even the 3-pulse dose settings do an effective job, thanks to its efficient technology. The innovative Inogen technology

Additional features of the Inogen One G4

  • The Inogen One G4 operates at an extremely low noise level (below 40 decibels) which is lower than a normal indoor conversation
  • The intelligent delivery technology detects your breathing frequency accurately and adjusts the oxygen supply accordingly. This system allows it to adjust the oxygen supply during sleeping hours as well automatically
  • The LCD display allows you to control different settings and also view different vital information’s like battery status or low battery/power percentage alerts


The Inogen One G4 is one of the lightest and also one of the quietest oxygen concentrators from Inogen. It is extremely easy to carry it around anywhere you go without draining a significant amount of your upper body strength. That is one of the most crucial factors that patients look for while searching for POC products, so the G4 is basically an ideal product for oxygen patients. It also comes with extended battery option for people who stay out frequently to ensure that they never run out of oxygen.

What's Includes:

  • Two Double Batteries
  • Concentrator
  • Lifetime Warranty
  • AC/DC power supplies
  • Carry Bag, User Manual
  • Bluetooth System
  • Inogen Connect App
  • Meets FAA requirements
  • Intelligent Delivery Technology®
  • Bluetooth System
  • Inogen Connect AppTwo Double Batteries
  • G4 8-Cell Battery with up to 4.5 hours of duration capacity
  • G4 bag with shoulder strap for easy portability


  • Ultra lightweight oxygen concentrator weighs only 2.8 pounds (including battery)
  • Compact dimensions make for a discreet yet effective portable oxygen source
  • Three flow settings (1, 2, 3)
  • Easy-to-read LCD screen user interface
  • Breath Detection Alert Mode delivers audible and visible signals when breath not detected for 60 seconds
  • Lithium-ion battery design powers up to 4.5 hours of cordless oxygen delivery
  • AC power supply automatically adjusts to voltages between 100 – 240V, making it functional for domestic and international power sources
  • DC charger delivers power solutions on the go via automobile 12V plug
  • Easy portability with standard carrying case and shoulder strap
  • Approved for in-flight use by the FAA


Inogen One G4 Size and Weight

  • Product Number: IS-400.
  • Width: 2.68 inches.
  • Height: 5.91 inches.
  • Length: 5.91 inches.
  • Weight: 2.8 pounds.
  • Single Battery Weight: 0.62 lbs.
  • Double Battery Weight: 1.11 lbs.
  • Carry Bag Weight: 0.12 lbs.

Product Performance

  • Maximum Pulse Oxygen Output: 630 mL/min; 31.5 mL @ 20 BPM.
  • Oxygen Concentration Range: 87 to 96%.
  • Maximum Outlet Pressure (PSI): 20 PSI (average max).
  • Flow Settings:1-3.
  • Operating altitude above sea level (feet): 10,000 ft.
  • Noise Level: 40 dBA.
  • Warm up time (minutes): 2 minutes.

Product Operation

  • Average Power Consumption at setting 2 (watts): 40 watts.
  • AC Power: 100 to 240 VAC, 50 to 60 Hz, 1 Amp (auto sensing).
  • Battery Duration
  • Single Battery: Up to 3 hours.
  • Double Battery: Up to 6 hours.
  • Battery Charging Time
  • Single Battery: Up to 3.25 hours.
  • Double Battery: Up to 6 hours.
  • 24/7 operation.
  • Use: Stationary, portable, and travel.

Manufacturing and Dependability

  • Product Numbers: IS-404, IS-408, IS404-S.
  • Manufacturer: Inogen One.
  • Brand: G4.
  • Made in USA.
  • HCPCS Code: E1390.
  • Warranty: machine – 3 years, 1 year – sieve beds and accessories.



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