A: Refurbished means the G4 has been inspected, cleaned, repaired if necessary, and tested to meet strict performance and safety standards.
SKU: BA-400
Inogen One G4 Portable Oxygen Concentrator - Open Box | Single (4 Cell)
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$1,299.00
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Inogen One G4 Portable Oxygen Concentrator (Refurbished)
Refurbished Inogen One G4 – Professionally reconditioned, tested, and sanitized to deliver safe, reliable, and affordable oxygen therapy in a compact design.
Lightweight Oxygen Therapy for Everyday Freedom
The Inogen One G4 Portable Oxygen Concentrator is one of the smallest and lightest oxygen units available today. Weighing less than 3 lbs, it provides powerful oxygen therapy in a pocket-sized device that fits easily into your daily routine.
Now available as a refurbished model, the G4 combines Inogen’s trusted technology with affordability and sustainability. Each refurbished unit is carefully restored, sanitized, and tested for quality—so you get dependable oxygen therapy without the higher price tag of a new device.
Whether you’re relaxing at home, running errands, or boarding a plane, the Inogen G4 is designed to keep up with your lifestyle.
Benefits of Choosing the Refurbished Inogen G4
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Exceptional Portability – Ultra-lightweight at just 2.8 lbs, small enough for a handbag, backpack, or travel case.
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Affordable Oxygen Therapy – Enjoy Inogen’s advanced design at a lower cost.
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Quiet & Discreet – At ~40 dBA, it operates quietly enough for both day and night use.
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Reliable Performance – Professionally reconditioned and tested to deliver accurate pulse-dose oxygen.
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Travel Ready – FAA-approved and equipped with long-lasting battery options, ideal for flights and vacations.
Why the Inogen One G4 Stands Out
Pocket-Sized Portability
The Inogen One G4 is one of the lightest portable oxygen concentrators on the market. Its compact design makes it easy to carry in a purse, handbag, or small backpack, giving you true freedom of movement.
Flexible Battery Options
The G4 comes with a standard battery (up to 2.7 hours on setting 2) and can be upgraded to a double battery that lasts up to 5 hours. Both charge easily with AC and DC power supplies, ensuring you’re supported at home, in the car, or on the go.
Simple and User-Friendly
With an easy-to-read LCD display and one-touch operation, the G4 is designed for straightforward daily use. Audible alerts help keep you informed, making oxygen therapy simple and stress-free.
FAA-Approved for Air Travel
Traveling with oxygen is hassle-free with the Inogen One G4. Its FAA clearance ensures you can use it on commercial flights, and its long battery life makes it ideal for extended trips.
Reclaim Your Mobility with the Inogen G4
A refurbished Inogen One G4 Portable Oxygen Concentrator gives you lightweight portability, reliable oxygen therapy, and significant savings compared to new models. With its discreet design, FAA approval, and long-lasting battery options, the G4 is the perfect companion for those who want oxygen therapy without limits.
Related parts
| Tube Connection | Cannula |
| Model | BA-400, BA-408 |
| HCPCS Codes | E1392 |
| Operating Modes | Pulse dose delivery (Intelligent Delivery Technology) |
| Altitude Adjustment | Up to 10,000 ft |
| Sound Level | ~40 dBA at flow setting 2 |
| Carrying Case | Yes |
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