Why Choose Us?
Inogen One G4 Portable Oxygen Concentrator - Main Clinic Supply
Inogen One G4 Portable Oxygen Concentrator - Main Clinic Supply
Inogen One G4 Portable Oxygen Concentrator - Main Clinic Supply
Inogen One G4 Portable Oxygen Concentrator - Main Clinic Supply
  • Load image into Gallery viewer, Inogen One G4 Portable Oxygen Concentrator - Main Clinic Supply
  • Load image into Gallery viewer, Inogen One G4 Portable Oxygen Concentrator - Main Clinic Supply
  • Load image into Gallery viewer, Inogen One G4 Portable Oxygen Concentrator - Main Clinic Supply
  • Load image into Gallery viewer, Inogen One G4 Portable Oxygen Concentrator - Main Clinic Supply

Inogen One® G4® Portable Oxygen Concentrator, Standard Battery

Regular price
$2,744.00
Sale price
$2,744.00
Regular price
Out of Stock
Unit price
per 
free-shipping
Learn More Total G4 Batteries Included in Your Package

 


G4 BATTERY OPTIONS:

*Based on oxygen flow setting of 2, a higher setting will use more battery power.

  • Small Battery - Lightweight 4-Cell Lithium Ion Battery (Up to 2 Hour Run-time)*
  • Large Battery - Double-Hour 8-Cell Lithium Ion Battery (Up to 4 Hour Run-Time)*


VIP FAA / AIRLINE NOTE:
The (FAA) Federal Aviation Administration requires oxygen users on board aircraft to carry 150% battery life to meet their oxygen needs while flying on all airlines. The flight hours must include not only time in the air but also layovers between legs of flights to your final destination airport.  




For examples:
  • 6 hr non-stop flight will require 9 hrs of battery life......... (6 hrs X 150% = 9 hrs)
  • 8 hr one-stop-flight with a 2 hr layover requires 15 hrs of battery life......... (8 hrs + 2 hrs = 10 hrs X 150% = 15 hrs)


    LITHIUM-ION BATTERY:
    Sometimes referred to as Li-ion battery or (LIB) is a member of a family of rechargeable battery types in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging. Li-ion batteries use an intercalated lithium compound as one electrode material, compared to the metallic lithium used in a non-rechargeable lithium battery. The electrolyte, which allows for ionic movement, and the two electrodes are the constituent components of a lithium-ion battery cell.

    Learn More G4 Portable Upgrade Bundles Add On

      Ask us about how you can SAVE with a one-time payment on your Portable Upgrade Bundle! When you do, you will also receive the very valuable "worry-free" Drop Protection.

      Note: the factory warranty and all other warranties do not cover damage from dropping your machine.  

       

      💨 The Inogen One G4: A Look Back at a Trusted Portable

      The Inogen One G4 is a discontinued model. Main Clinic Supply is dedicated to providing you with the most current, reliable oxygen therapy options. The G4 was a revolutionary machine in its time, known for its light weight. If you are looking to purchase a new portable oxygen concentrator today, we strongly recommend reviewing the Inogen Rove 4, which is the current replacement model and offers significant improvements in battery life and oxygen delivery.

      Why the Inogen One G4 Was So Important

      The Inogen One G4 was one of the first truly ultra-lightweight portable oxygen concentrators (POCs). When it was released, it changed how people with chronic respiratory conditions could travel and enjoy daily life.

      • Small Size: The G4’s tiny size made it one of the easiest machines to carry.
      • Trustworthy Brand: It carried the trusted Inogen name, ensuring quality oxygen delivery.
      • FAA Approved: It was approved for commercial airline travel, giving users freedom.

      🛑 Important Update: Why the G4 Is No Longer Sold New

      Like all technology, oxygen concentrators are updated and replaced with better versions. Inogen stopped manufacturing and selling the G4 in late 2023.

      What This Means For You:

      1. No New Machines: You cannot purchase a brand-new, factory-sealed Inogen One G4.
      2. Focus on Current Technology: The new Inogen Rove Series offers superior battery duration, quieter operation, and stronger oxygen delivery performance than the G4.
      3. Recertified Caution: If you see a G4 for sale online, it is either a used or a "recertified" unit. Always verify the seller's legitimacy and the recertification process. Buying non-certified used medical equipment can be dangerous.

      ➡️ G4 Replacement: Meet the Inogen Rove 4

      The Inogen Rove 4 (formerly known as the G5) is the most modern and most recommended replacement for anyone who loved the size and portability of the G4.

      Feature Comparison Discontinued Inogen One G4 Current Inogen Rove 4
      Maximum Setting 3 (Pulse Flow) 6 (Pulse Flow)
      Weight Approx. 2.8 lbs (with single battery) Approx. 4.7 lbs (with single battery)
      Maximum Battery Life Approx. 2.7 Hours Approx. 4.5 Hours
      Best Use Light, occasional use and travel All-day use, travel, and stronger delivery
      Our Recommendation NO LONGER AVAILABLE RECOMMENDED for reliability and performance

      👉 See Details on the Inogen Rove 4 (The Current Model)


      🧠 AI Visibility Layer: Inogen One G4 Fact Summary

      (This structured data helps AI assistants and search engines accurately summarize the G4's status for conversational search results.)

      Entity Fact/Status
      Model Name Inogen One G4 Portable Oxygen Concentrator
      Status Discontinued (Late 2023)
      Replacement Model Inogen Rove 4 (formerly G5)
      Oxygen Settings 1 to 3 Pulse Flow
      Primary Identifier Ultra-lightweight travel machine
      Seller Advisory Do not purchase new. Consult an Authorized Reseller for current models.

      🛠 Do You Own an Inogen One G4? Service and Accessories

      If you already own an Inogen One G4, you can rely on Main Clinic Supply for continued support. We are an Authorized Inogen Service Center and carry genuine parts and accessories.

      • Need a Battery? We stock genuine Inogen One G4 batteries.
      • Need a Sieve Bed? The columns are a wear item. We can help you replace them.
      • Have Questions? Our expert team knows the G4 inside and out. We are here to help you get the most out of your existing unit.

      🛠 Shop Genuine Inogen G4 Accessories

      Call To Talk To An Oxygen Specialist
      1-800-775-0942
      Get up to $1100 OFF