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Inogen
Inogen One G5 Portable Oxygen Concentrator
Best SellerFAA Approved
Six pulse-dose settings, up to 13 hours of battery life, and a 4.7 lb travel-ready design — the G5 remains one of the most trusted portable oxygen concentrators ever made.
- Six pulse-dose flow settings delivering up to 1,260 ml/min — the widest range in its size class
- Up to 6.5 hours on the standard battery, 13 hours with the extended battery (setting 1)
- Just 4.7 lbs with the standard battery — carried like a small shoulder bag
- FAA approved for commercial air travel worldwide
- Intelligent Delivery Technology synchronizes each dose to your natural breathing
- Quiet 38 dBA operation with a clear LCD display and simple controls
In depth
Everything about the Inogen One G5
All-day independence on a single charge
The G5 was built around one idea: oxygen therapy should follow your schedule, not the other way around. On flow setting 1 the standard battery delivers up to 6 hours 30 minutes of oxygen, and the optional extended battery stretches that to a full 13 hours — enough for a day of errands, a long flight, or an afternoon with the grandkids without hunting for an outlet.
Cleared for takeoff — FAA approved
The Inogen One G5 meets FAA requirements for in-flight use on commercial aircraft, so your therapy travels with you. Most airlines simply ask that you notify them about 48 hours before departure; we include a quick checklist with every order so your first trip is stress-free.
Intelligent Delivery Technology
Rather than running a constant flow, the G5 senses each inhalation and delivers a precisely timed pulse of oxygen at the moment you breathe in. The result is more efficient oxygen use, longer battery life, quieter operation, and comfortable therapy whether you are resting, walking, or sleeping.
Small, quiet, and easy to live with
At 8.15 × 7.19 × 3.26 inches the G5 is about the size of a small handbag, and at 38 dBA on setting 2 it is quieter than a library conversation. The backlit LCD and three-button interface make changing settings simple for users of any age, and the Inogen Connect app (where available) adds remote monitoring, battery status, and column-life tracking from your phone.
Backed by a 3-year manufacturer warranty
Every Inogen One G5 we ship is brand new, factory sealed, and covered by Inogen’s standard 3-year warranty, with a 1-year warranty on batteries and accessories. Our respiratory specialists are a phone call away for setup help, troubleshooting, and replacement parts for the life of the unit.
Technical data
Full specifications (18 data points)
Physical
| Dimensions | 7.19 in L × 3.26 in W × 8.15 in H |
|---|---|
| Weight | 4.7 lbs with standard battery · 5.7 lbs with extended battery |
| Sound level | 38 dBA at setting 2 (typical) |
Oxygen delivery
| Delivery method | Pulse dose (Intelligent Delivery Technology) |
|---|---|
| Flow settings | 1–6, up to 1,260 ml/min |
| Oxygen purity | 90% (+6% / −3%) at all settings |
| Cannula length | Up to 25 ft |
Battery & power
| Battery type | Rechargeable lithium-ion |
|---|---|
| Standard battery runtime | Up to 6.5 hrs (setting 1) · 5 hrs (setting 2) · 3.5 hrs (setting 3) |
| Extended battery runtime | Up to 13 hrs (setting 1) · 10 hrs (setting 2) · 7 hrs (setting 3) |
| AC power | 100–240 V, 50–60 Hz (worldwide auto-sensing) |
| DC power | Vehicle cable included |
Use & compliance
| Operating altitude | Up to 10,000 ft |
|---|---|
| FAA approved | Yes |
| Filters | Reusable particle filter + output filter |
| Alerts | Battery status, breath detection, service alerts |
| Warranty | 3 years (concentrator) · 1 year (battery & accessories) |
| Prescription required | Yes |
Good to know
Frequently asked questions
Do I need a prescription to buy the Inogen One G5?
Yes. Like all oxygen concentrators, the G5 requires a valid prescription. After checkout, simply email or fax us a copy — our team confirms it within one business day and your order ships immediately after.
Can I fly with the Inogen One G5?
Yes. The G5 is FAA approved for use on all US commercial flights. Airlines typically require 48-hour advance notice and enough battery for 150% of the flight time, so many travelers pair the unit with an extended battery.
How loud is it?
About 38 dBA at setting 2 — comparable to a quiet library. Most users find it unnoticeable in normal rooms, restaurants, and vehicles.
What is the difference between the standard and extended battery?
The standard 8-cell battery weighs about 1 lb and runs up to 6.5 hours at setting 1. The extended 16-cell battery weighs about 2 lbs and doubles the runtime to roughly 13 hours.
Talk it through
Questions about this product?
Get instant answers about specs, shipping, prescriptions, and warranties — or reach a human respiratory specialist who knows this machine inside out.
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Hi! I can answer instant questions about the Inogen One G5 — or connect you with a specialist at (888) 585-8288. What would you like to know?
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Customer reviews
4.8
5 verified reviews
Reviews are collected from verified purchasers of this product.
Write a reviewInogen One G5 16-Cell Double Battery Portable Oxygen Concentrator
I have not received it yet, it has taken way too long getting here! If it doesn’t arrive soon, I am going to cancel the order.
I bought this because I needed something that worked that can serve me well on an overseas trip when the one I was provided with before this one wouldn’t charge, and this was after I had bought extra batteries that lasted longer than the single battery I had. My only issue is being able to sync the machine with my phone.
This transaction was excellent. The inogen concentrator is an excellent machine. Home health outlet had the best price that I could find. They shipped the same day that I purchased it. What else can you ask for.
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