- Weight: 2.8 lb
- Choose from three distinct flow settings (1-3)
- 4 cell battery (single) lasts for up to two hours / 8 cell battery (double) lasts for up to four hours
- Meets all FAA requirements - meaning you can take your G4 on a plane
- Note: This product only ships to addresses in the US
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Learn more:
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Purchasing Restriction: Medical license or prescription required
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MFR:
Inogen
Ships from Manufacturer
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MPN: IS-400-NA
- Phone: (800) 695-7915
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Frequently asked questions
Is the Inogen One G4 system easy to operate?
Yes, the Inogen One G4 System is designed for simple and straightforward operation. It utilizes intuitive controls and an accessible LCD display for user convenience. The display actively shows critical information, such as the flow setting and remaining battery life (e.g., “Setting 1, Battery 62%”).
How fast does the concentrator warm up?
The Inogen One G4 System has a warm-up time of just two minutes, allowing for quick oxygen delivery when needed.
Are both AC and DC power supplies included?
Yes, the Inogen One G4 System is a comprehensive package that includes all necessary power supplies for operation and charging, ensuring you can use it both at home and while traveling:
- AC Power Supply (#BA-401): Used to operate the concentrator or recharge the battery from any standard wall outlet (100 to 240 V).
- DC Power Cable (#BA-306): Allows you to power the unit or recharge the battery using the accessory port (car charger) in your vehicle.
Is this product factory new?
The Inogen One G4 System is a Factory New product from the Inogen brand, ensuring you receive a brand-new device.
What is the operating temperature range?
The system can operate in temperatures ranging from 41 to 104 °F (5 to 40 °C) and at altitudes up to 10,000 ft (3048 m).
Can it be used continuously?
Yes, the Inogen One G4 System is designed for 24/7 continuous use, making it suitable for both daily living and travel.
Are carrying accessories included?
Yes, the Inogen One G4 System is designed for ultra-portability and comes standard with key accessories to make carrying effortless:
- Carry Bag (#CA-400): Provides protection and easy transport for the concentrator.
- Carry Strap (#CA-401): Allows for comfortable, hands-free use while mobile.
This comprehensive inclusion ensures the system is ready for 24/7 use and travel immediately upon purchase.
Is there an optional backpack available?
While the Inogen One G4 System is highly portable, the Inogen One G4 Carry Backpack (#CA-450) is an additional accessory recommended for enhanced portability, offering another convenient way to transport the device.
Who is this system ideal for?
The product is ideal for active individuals seeking a lightweight and portable oxygen solution, suitable for travel, daily errands, and home use.
What essential power accessories are included?
The Inogen One G4 System is designed for 24/7 continuous use, and it includes all the essential power accessories needed for home, travel, and vehicle operation:
- AC Power Supply (#BA-401): Use this for powering the concentrator or recharging the battery via standard wall outlets (100 to 240 V input).
- DC Power Cable (#BA-306): This allows you to power the unit or recharge the battery while in a vehicle using a DC socket (13.5 to 15.5 V input).
Additionally, the complete system purchase includes your choice of a 4-cell or 8-cell rechargeable battery.

Inogen One G4 System
Portable Oxygen Concentrators | Inogen One G4 Getting Started