Inogen One G4 Portable Oxygen Concentrator
By Inogen
or 4 interest-free payments of $631.25 with
Comes With
Concentrator, 1 battery, AC & DC power adapter, carry strap & bag, and owners manual.
3 year warranty on machine/ 1 year warranty on battery and accessories.
The smallest of the Inogen series, this concentrator will have you in awe of its giant battery life. The Inogen One G4 is one of the smallest portable oxygen concentrators on the market, only weighing 2.8 pounds. The FAA approved G4 is perfect for getting out of the house for the day, or even going on vacation. This unique machine will meet all your oxygen needs for 24/7 use. The G4 has Intelligent Delivery Technology, so it delivers oxygen within 400 milliseconds of you taking a breath. Only producing 40 decibels of noise, the G4 is the sound of a light rain so you don’t have to worry about disturbing anyone while using your Inogen One G4.


Machine + Double Battery: 3.29 lbs

Width: 2.68 in
Height: 7.2 in
Battery Duration
Flow | 4 Cell | 8 Cell |
---|---|---|
1 Liter Per Minute | 3 hrs | 5 hrs |
2 Liters Per Minute | 2 hrs | 4 hrs 30 mins |
3 Liters Per Minute | 1 hr 15 mins | 2 hrs 30 mins |
Since the G4 is half the size of the Inogen One G3, it is very easy to tote around. The Inogen One G4 is 5.91 inches in length, 2.68 inches in width, and 7.2 inches in height which makes it one of the smallest portable oxygen concentrators available. Whether you are hiking, golfing, biking, or just going to a movie the Inogen One G4 is a perfect fit for you. Oxygen users who are on 1-3 liters per minute pulse love the G4 for its long battery life and over the shoulder carry bag. This concentrator comes with a 3 year warranty on the machine, and a 1 year warranty on all accessories and sieve beds. The G4 is very low maintenance and only requires you to wash and dry your intake filter regularly. The Inogen One G4 comes with the machine, AC power supply, DC power cord, 4 or 8 cell battery, cannula, and owner’s manual.
Product Specifications
Flow | Pulse |
---|---|
Weight | 2.8 LBS With Single Battery, 3.29 LBS With Extended Battery |
Dimensions | L: 5.91 IN W: 2.68 IN H: 6.5 IN With Standard Battery
L: 5.91 IN W: 2.68 IN H: 7.2 IN With Extended Battery |
Noise Level/ How Loud? | 40 Decibels, Similar to a stream |
Charging Time | Up to 3 Hours for a Single Battery, Up to 5 Hours for a Double Battery |
FAA Approved | Yes |
Manufacturer | Inogen |
Storage | Operating Temperature: 41- 104 F; Storage Temperature: -4 – 140 F
Humidity: 0%-95% ; Non- Condensing |
Operating Altitude Range | 0-10,000 Feet |
Power | 100-240 V; 50-60 HZ |
What Comes in the Box? | Machine, Battery, AC Supply, DC Supply,
Carry Bag + Strap, Cannula, User Manual |
Does it Need to Be Refilled With Oxygen? | No, the unit makes it’s own oxygen from the air around it |
Max Oxygen Output | 90% on all settings |
Accessories | 4 Cell Battery, 8 Cell Battery, External Battery Charger, Column Replacements, Gross Particle Filters, AC Power Supply, DC Power Supply, Carry Bag, Output Filter Kit |
CPAP/ BiPAP Compatible? | No |

Inogen One G4 Hip Bag
By Inogen
or 4 interest-free payments of $16.25 with
Comes with
Hip Bag
Warranty
1 Year
The Inogen One G4 Hip Bag provides a hands-free experience that allows maximum portability for the G4 portable oxygen concentrator. Its waterproof fabric protects your device from the elements while its sturdy yet flexible thermoformed belt secures the device to you comfortably. The waist strap can be adjusted easily as you go about your day. Utilize the two storage pockets for batteries, keys, or other personal items.
Specifications
Manufacturer | Inogen |
---|---|
Waist Circumference | Minimum: 31 in. Maximum 58 in. |
FAA Approved | Yes |
Warranty | 1 Year |
SKU # | CA-410 |
Get More Info:

Inogen One G4 DC Power Supply
By Inogen
or 4 interest-free payments of $18.00 with
Comes with
DC Power Adapter
Warranty
1 Year
The Inogen One G4 DC Power Supply is specifically designed for use with the Inogen One G4 portable oxygen concentrator. The input cable connects directly into your vehicle’s cigarette lighter or auxiliary DC power supply. It works in most cars, trucks, boats, and RV’s so you can charge your oxygen device while on the go.
Battery Duration
Flow | 4 Cell | 8 Cell |
---|---|---|
1 Liter Per Minute | 3 hrs | 6 hrs |
2 Liters Per Minute | 2 hrs | 4 hrs 30 mins |
3 Liters Per Minute | 1 hr 15 mins | 2 hrs 30 mins |
Specifications
Manufacturer | Inogen |
---|---|
Weight | 0.4 lbs. |
Length | 7 feet 8 in. |
Warranty | 1 Year |
SKU # | BA-306 |
Get More Info:

Inogen One G4 AC Power Supply
By Inogen
or 4 interest-free payments of $41.00 with
Comes with
AC Power Adapter
Warranty
1 Year
The Inogen One G4 AC Power Supply is specifically designed for use with the Inogen One G4 portable oxygen concentrator. Store it in your Carry Bag with your oxygen device for peace of mind, ensuring you’re never without a means to charge your batteries.

Battery Duration
Flow | 4 Cell | 8 Cell |
---|---|---|
1 Liter Per Minute | 3 hrs | 6 hrs |
2 Liters Per Minute | 2 hrs | 4 hrs 30 mins |
3 Liters Per Minute | 1 hr 15 mins | 2 hrs 30 mins |
Specifications
Manufacturer | Inogen |
---|---|
Weight | .85 lbs. |
Length | 12 feet 10 in. |
Warranty | 1 Year |
SKU # | BA-401 |
Get More Info:

Inogen One G4 User Manual
By Inogen
or 4 interest-free payments of $4.75 with
Comes with
User Manual
Use the Inogen One G4 User Manual to learn about your oxygen concentrator’s user controls, how to set your prescribed oxygen flow, get used to indicator lights and identifying symbols, and learn to replace any parts and accessories as needed. Oxygen users who have this handy troubleshooting guide readily available will be able to operate their device quickly and with ease.
Specifications
Manufacturer | Inogen |
---|---|
SKU # | RP-407 |
Get More Info:

Inogen One G4 Replacement Sieve Bed Columns
By Inogen
or 4 interest-free payments of $32.25 with
Comes with
Pair of Sieve Bed Columns
Warranty
1 Year
The Inogen One G4 Replacement Sieve Bed Columns are designed to be used with the G4 to service your oxygen concentrator quickly without waiting for repairs. The sieve beds convert low-grade air into medical- grade oxygen while filtering out impurities. Your device will notify you with a low purity alarm and display “02 Service Soon”, and will have 30 days to replace them. No tools are necessary for column replacement. Simply press the button on your concentrator’s base to release the latch and slide them out to replace. Change the columns every 18-24 months to extend the life of your unit.

Specifications
Weight | .55 lbs. |
---|---|
Manufacturer | Inogen |
Size | 1 x 1.5 x 4.75 in. |
Warranty | 1 Year | SKU # | RP-406 |
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Inogen One G4 Carrying Strap
By Inogen
or 4 interest-free payments of $5.00 with
Comes with
Carry Strap
Warranty
1 Year
The Inogen One G4 Carry Strap is a weather-resistant strap designed for use with the G4 portable oxygen concentrator. Its comfortable shoulder padding and adjustable loop provide the oxygen user with better mobility while on the go.

Specifications
Manufacturer | Inogen |
---|---|
Weight | 0.8 oz. |
Size | Adjustable |
Warranty | 1 Year |
SKU # | CA-401 |
Get More Info:

Inogen One G4 Particle Filter
By Inogen
or 4 interest-free payments of $8.75 with
Comes with
2 Particle Filters
Warranty
1 Year
The eco-friendly Inogen One G4 Particle Filter will keep airborne allergens like dust, pollen, and pet hair away from your oxygen supply. Maintaining a clean particle filter is a low-maintenance, easy process that only requires a quick rinse once a week. Doing so will greatly extend the life of your oxygen concentrator and ensure your supplemental oxygen is flowing smoothly..
Specifications
Manufacturer | Inogen |
---|---|
Warranty | 1 Year |
SKU # | RP-405 |
Get More Info:

Inogen One G4 Backpack
By Inogen
or 4 interest-free payments of $27.50 with
Comes with
Carry Backpack
Warranty
1 Year
The Inogen One G4 Carry Backpack is a lightweight accessory ideal for adventurous or traveling oxygen users. The thermoformed shell and waterproof exterior protect your oxygen concentrator as it sits securely in an EVA foam-protected slot. Easily access your device’s LCD controls through the plastic display cover. There are four storage compartments for you to store your oxygen accessories, like batteries, cords, and cannulas. You can easily adjust the padded shoulder straps to fit your comfort level.

Specifications
Manufacturer | Inogen |
---|---|
Weight | 6.4 oz. |
Dimensions | 11.3 x 19.95 x 2.75 in. |
Warranty | 1 Year |
SKU # | BA-450 |
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Inogen One G4 Carry Bag
By Inogen
or 4 interest-free payments of $9.75 with
Comes with
Carry Bag
Warranty
1 Year
The Inogen One G4 Carry Bag features an ultra portable, slim design so you can easily carry and store your G4 portable oxygen concentrator wherever you go. Its waterproof polyester fabric protects your device from the elements while also shielding it from any bumps along the way. The adjustable shoulder strap allows for maximum comfort as you go about your day.

Specifications
Manufacturer | Inogen |
---|---|
Weight | 0.3 lbs. |
Dimensions | 3.5 x 6.5 x 7 in. |
Warranty | 1 Year |
SKU # | CA-400 |
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Inogen One G4 4 Cell Single Battery
By Inogen
or 4 interest-free payments of $93.50 with
Comes with
Rechargeable Lithium-Ion 4-cell
Single Battery
Warranty
1 Year
The Inogen One G4 (4 Cell) Battery provides oxygen users with the freedom to travel with peace of mind. Charge your Single Battery before your trip and you’ll be able to supply your portable oxygen concentrator with up to 3 hours of battery life for the long journey ahead. This battery also has an indicator on one side that will tell you what percentage the battery is charged to, so you don’t have to put it in the machine to see if it is fully charged. With the quick release button, it’s a fast and easy task to switch out your rechargeable batteries whenever you need to. Be sure to give your battery at least 3 hours to reach 100% maximum charge.


Battery Duration
Flow | 4 Cell | |
---|---|---|
1 Liter Per Minute | 3 hrs | |
2 Liters Per Minute | 2 hrs | |
3 Liters Per Minute | 1 hr 15 mins |
Specifications
Weight | .62 LBS |
---|---|
Manufacturer | Inogen |
FAA Approved | Yes |
Warranty | 1 Year |
Battery Charging Time | 3 hours |
SKU # | BA-400 |
Get More Info:

Inogen One G4 8 Cell Double Battery
By Inogen
or 4 interest-free payments of $142.25 with
Comes with
Rechargeable Lithium-Ion 8-cell
Double Battery
Warranty
1 Year
The Inogen One G4 (8 Cell) Battery provides oxygen users with more battery life for the journey ahead. Charge your Double Battery before your trip and you’ll be able to supply your portable oxygen concentrator with up to 6 hours of battery life. This battery also has an indicator on one side that will tell you what percentage the battery is charged to, so you don’t have to put it in the machine to see if it is fully charged. With the quick release button, it’s a fast and easy task to switch out your rechargeable batteries whenever you need to. Be sure to give your battery at least 5 hours to reach 100% maximum charge.


Battery Duration
Flow | 8 Cell | |
---|---|---|
1 Liter Per Minute | 6 hrs | |
2 Liters Per Minute | 4 hrs 30 mins | |
3 Liters Per Minute | 2 hrs 30 mins |
Specifications
Weight | 1.11 LBS |
---|---|
Manufacturer | Inogen |
FAA Approved | Yes |
Warranty | 1 Year |
Battery Charging Time | 5 hours |
SKU # | BA-408 |
Get More Info:

Inogen One G4 Output Filter Replacement Kit
By Inogen
or 4 interest-free payments of $8.75 with
Comes with
Spanner Wrench, 2 Output Filters
Warranty
1 Year
The Inogen One G4 Output Filter Replacement Kit allows you to replace the bacterial filter on your oxygen concentrator. To do so, use the spanner wrench provided in your kit to remove the cannula bar that juts out of your device. Simply remove the old filter with tweezers and replace it with a new one before screwing the cannula bar back into place with the wrench.
Specifications
Manufacturer | Inogen |
---|---|
Warranty | 1 Year |
SKU # | RP-404 |
Get More Info:

Inogen One G4 External Battery Charger
By Inogen
or 4 interest-free payments of $78.50 with
Comes with
External Battery Charger
AC Power Supply
Warranty
1 Year
The Inogen One G4 External Battery Charger offers oxygen users a way to simultaneously charge up any extra batteries as needed. A depleted Single Battery will recharge in 2.5 hours, while a Double Battery will gain a full charge in 5 hours. The indicator light shows oxygen users how much battery life the External Battery Charger has left, and you’ll receive an AC Power Adapter along with it.
Battery Duration
Flow | 4 Cell | 8 Cell |
---|---|---|
1 Liter Per Minute | 3 hrs | 6 hrs |
2 Liters Per Minute | 2 hrs | 4 hrs 30 mins |
3 Liters Per Minute | 1 hr 15 mins | 2 hrs 30 mins |
Specifications
Manufacturer | Inogen |
---|---|
FAA Approved | Yes |
Warranty | 1 Year |
Battery Charging Time | Single: 2.5 Hours; Double: 5 Hours |
SKU # | BA-403 |