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Description
Inogen One G4 Portable Oxygen Concentrator – Ultra Lightweight Pulse Dose Travel Oxygen SystemThe Inogen One G4 is the lightest portable oxygen concentrator available 2. 8 pounds with the single battery. It fits in a fanny pack, disappears into a tote bag, and sits on the seat beside you in the car without requiring a thought. For patients on settings 1 through 3 who want oxygen that is simply present without being noticed by themselves or anyone else the G4 is in a category by itself. Clinically validated for 24 7 use. FAA approved. Bluetooth
The Inogen One G4 is the lightest portable oxygen concentrator available — 2.8 pounds with the single battery. It fits in a fanny pack, disappears into a tote bag, and sits on the seat beside you in the car without requiring a thought. For patients on settings 1 through 3 who want oxygen that is simply present without being noticed — by themselves or anyone else — the G4 is in a category by itself. Clinically validated for 24/7 use. FAA-approved. Bluetooth monitoring via the Inogen Connect app.
Pulse dose only. Settings 1-3. Prescription required — bring yours when you come in or call before ordering. In-stock units available at all five SW Florida showrooms.
Questions about whether the G4 matches your prescription?
Call 866-218-0902
-- Mon-Fri 9AM-5PM · Sat 9AM-3PM · Try it in any SW Florida showroom · 10-Day No-Risk Trial
Before you order — confirm these
The G4 covers settings 1-3 only. If your prescription requires settings 4 or above, the G4 is not the right unit — call us and we will find what is. Battery life is short — plan your day around power access. Pulse dose during sleep requires physician guidance. In SW Florida summer heat, plan for 70-75% of published battery runtime. 866-218-0902
What Makes the G4 the One That Goes Everywhere
2.8 lbs — Lightest Portable Oxygen Concentrator Available
There is a specific kind of freedom that 2.8 pounds makes possible. It fits in a fanny pack. It disappears into a tote bag. It sits on the seat beside you without requiring a thought. For patients on settings 1-3 who want oxygen that is simply present without being noticed, the G4 is in a category by itself.
40 dBA · Bluetooth · Clinically Validated 24/7 · FAA-Approved
Quiet enough for a restaurant or waiting room. The Inogen Connect app provides real-time Bluetooth monitoring for patients and caregivers. Clinically validated for 24/7 waking use. FAA-approved for domestic commercial flight — the right travel companion for snowbirds flying frequently.
Know the Battery Limitation — Plan Around It
Up to 2.6 hours on the single battery, up to 5 hours on the double. The G4 is the right tool for patients always within reach of AC power — medical appointments, visiting family, short errands. For all-day use away from power, carry spare batteries or consider the G5 or Rove 6.
What's Included
- Inogen One G4 Portable Oxygen Concentrator
- 8-cell single battery
- AC power supply
- DC car adapter
- Carrying bag
- Nasal cannula
- User manual
Full Specifications
| Model | Inogen One G4 |
| Delivery Type | Pulse dose only |
| Settings | Pulse dose 1-3 |
| Weight | 2.8 lbs (single battery) · 3.3 lbs (double battery) |
| Dimensions | 7.2"H x 5.91"W x 2.68"D |
| Battery Life | Up to 2.6 hrs (single) · Up to 5 hrs (double) |
| Noise Level | 40 dBA |
| Connectivity | Bluetooth · Inogen Connect app (iOS and Android) |
| AC Power | 100-240V worldwide |
| DC Car Power | Yes |
| FAA Approved | Yes — domestic commercial flight |
| Clinically Validated | Yes — 24/7 waking use |
| Warranty — Concentrator | 3-year or Lifetime |
| Warranty — Accessories | 1 year |
Complete Portable Oxygen Concentrator Buying Guide
Comparing the G4 to the G5, Rove 6, or a higher-setting unit? Our 2026 guide covers every concentrator we carry and explains the clinical differences that actually matter. Read the Complete Portable Oxygen Concentrator Guide →
Frequently Asked Questions
The G4 is the lightest unit Inogen makes — 2.8 lbs — but covers only settings 1-3. The G5 covers settings 1-6, weighs 4.7 lbs, and delivers up to 13 hours on the double battery. If your prescription is settings 1-3 and weight is the priority, the G4 is the answer. If you need settings 4-6 or all-day battery life away from power, the G5 is the right unit. 866-218-0902.
The G4 is clinically validated for 24/7 waking use. Whether it is appropriate for nighttime use depends on your specific prescription and breathing pattern during sleep. Your physician's guidance on nighttime use is essential before using any pulse dose unit overnight. 866-218-0902.
The G4 single battery delivers up to 2.6 hours; the double up to 5 hours. In SW Florida summer heat, plan for 70-75% of those figures. For patients who are always near AC power — medical appointments, visiting family, short errands — this is manageable. For longer outings, carry a spare double battery and know where you can plug in. If your day regularly takes you away from power for 6+ hours, the G5 or Rove 6 is a better fit. 866-218-0902.
Yes — FAA-approved for domestic commercial flight. The concentrator checks at the gate door; batteries must be carried in the cabin. Given the short battery life, bring multiple batteries and calculate 150% of total travel time. Call the airline at least 48 hours before your flight. 866-218-0902.
Yes. Our 10-Day No-Risk Trial lets you take the G4 home and use it in your actual life for 10 days. If it is not the right fit, bring it back and we will exchange it. No restocking fee, no fine print. Walk-ins welcome at all five SW Florida locations. 866-218-0902.
Compare Portable Oxygen Concentrators
Most Prescribed — Settings 1-6
Inogen One G5
Settings 1-6 · 4.7 lbs · 13 hrs (double) · 8-yr service life
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Latest Inogen — Longest Battery
Inogen Rove 6
Settings 1-6 · 4.8 lbs · 12 hrs 45 min · 37 dBA
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Lightest 5-Setting · Made in USA
3B Medical Aer X
Settings 1-5 · 4.25 lbs · 5.5 hrs · Magnetic cannula port
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All Pulse Dose Concentrators
Full Pulse Dose Lineup
Every pulse dose unit we carry — all settings, all weights
Browse all →
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Southwest Florida Showrooms & Nationwide Shipping
Five locations where you can hold this unit and speak with a Respiratory Therapist before buying — Venice, Sarasota, Port Charlotte, Fort Myers, and Naples. White-glove delivery available across SW Florida. Nationwide shipping on all models. Our 10-Day No-Risk Trial is available on every concentrator we carry.
📞 866-218-0902 · Mon-Fri 9AM-5PM · Sat 9AM-3PM · Find your nearest location →
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
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Product Reviews
★★★★★ 5
Quality ball - Heeler approved
Pattern Name: 4 Medium balls
My heeler loves this ball He is a huge baller and this balls holds up. Bounces great. Takes a chewing. It’s also lightweight, which is good, because sometimes my aim is bad. The 2.5” is big enough to not roll under the couch. Awesome. The best part is, he has a stash of replacements ready for when he loses it.
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Reviewed in the United States on January 15, 2026
★★★★★ 5
Best dog ball ever!
Pattern Name: 3 Large balls
We have a border collie and an Australian cattle dog. Both are obsessed with balls and love to play catch. They would destroy all tennis ball including ones for dogs within minutes. These have lasted over a year! They have some teeth marks but still work great! I have just bought a second set as they still tend to get lost from time to time.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
These are worth the money!! BUY THEM!!
Pattern Name: 3 Large balls
These balls are amazing if you have a dog that likes to chew! We have 2 medium sized breeds that are heavy heavy chewers and they get so excited when we dig these out from under the couch or tv stand. Most "chew toys" have to find their way to the garbage within a few days. We've had these a little over 2 weeks now and they are holding up great. There are little teeth marks in them but no chunks ripped out and seem to be holding up great. They are a little squishy so I was worried they would get destroyed but nope. They are a little bigger than a tennis ball so I don't have to worry about them choking on them. JUST BUY THEM!!
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Reviewed in the United States on April 6, 2026
★★★★★ 5
Nice Ball
Pattern Name: 1 Large ball
Nice light, yet durable ball for my gs/pit mix. He's a year and a half and he plays hard. I really like this ball and I'd buy it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
★★★★★ 4
Bounces great
Pattern Name: 3 Large balls
My dog is ball crazy and she loves this ball. It is durable and lightweight.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
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