Slightly Used Inogen One G4 Double Battery

$ 569



✔︎ Delivers Uninterrupted Portable Operation
✔︎ Double the Battery Life of the slightly used G4 Single Battery, Allowing You to Spend More Time Outside the House
✔︎ Quick & Easy Removal; Even If You Have a Hard Time Grasping Things
✔︎ 3 Available Charging Options to Complement Your Lifestyle

Flow Rate Expected Battery Life
1 Up to 5.0 Hours
2 Up to 4.5 Hours
3 Up to 2.5 Hours
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Slightly Used Inogen One G4 Double Battery

With your newly restored independence, you will want to take full advantage of the lifestyle enhancing benefits of the slightly used Inogen One G4. To fully maximize the portable use of your slightly used G4 the double battery should be your go to option.

You no longer have to deal with hassle of replacing or refilling oxygen tanks, instead, the slightly used Inogen One G4’s double battery is rechargeable using an AC power supply, DC power cord, or an external battery charger.

The double battery is an exceptional choice if you don’t mind adding half a pound to the overall package in exchange for longer portable operation. The double battery is the recommended battery choice for active and traveling oxygen patients.


Battery Life that Matches Your Lifestyle Demands

Using the double battery, you will have the ability to run errands, travel, or catch up with friends or family, for up to 4 hours and 30 minutes on a pulse setting of 2. Receive over double the battery life of the single battery, while only adding half a pound to the unit’s weight.


Full Battery Life:

Pulse Flow Rate Battery Life
1 Up to 5 Hours
2 Up to 4 Hours and 30 Minutes
3 Up to 2 Hours and 30 Minutes

Keep Track of Your Remaining Battery Life

Have you ever worried about running out of oxygen while away from home? This is a common and justified fear but is eliminated thanks to the slightly used Inogen One G4’s control panel on-screen battery gauge.

The instant you turn on the slightly used G4 the LCD screen will display your remaining battery life in an enlarged battery gauge as well as in a percentage.

Restriction Free Charging Options

  • AC Power Supply
  • DC Power Supply
  • External Battery Charger

As listed above, you have 3 available options to choose from for charging your slightly used Inogen One G4 double battery. Furthermore, 2 out of the 3 available charging options are included with your purchase of the slightly used G4.


AC Power Supply

Whenever you are lounging around the house watching T.V., reading your favorite novel, or completing those household chores you’ve been putting off.

The 110 volt AC power supply will allow you to charge the double battery in the G4 through any conventional wall outlet. While allowing you to simultaneously receive your prescribed oxygen therapy on all 3 pulse flow settings.

This speedy charging method takes up to 5 hours to fully recharge a depleted slightly used G4 double battery. Keep in mind though that using the POC while charging will increase the overall charging cycle.


DC Power Supply

Are you planning an upcoming road trip? Or do you drive on a regular basis? If you answered yes to either of those questions, you will love the benefits of the DC power supply.

This 12V DC power cord gives you the ability to both charge and operate your slightly used Inogen One G4 double battery through any car, truck, SUV, R.V., or boat’s battery.

Whether on vacation or running errands, you should always keep the DC power cord conveniently located in your vehicle to supplement and extend the portable use of your slightly used G4 portable oxygen concentrator.

A depleted double battery will be fully recharged with the DC power cord in up to 5 hours.


External Battery Charger

When you have multiple slightly used Inogen One G4 double batteries it can be time consuming to charge each on individually through the AC power supply or DC power cord.

Instead of waiting, upgrade to the additional cost slightly used G4 external battery charger. Doing so will allow you to enjoy portable operation of the slightly used G4, while simultaneously charging an extra double battery on the side with the external battery charger.

The external battery charger features a 110v power cord that enables you to plug it into any conventional wall outlet.


Frequently Asked Questions

How Much Does the slightly used Inogen One G4 Battery Weigh?

The double battery weighs 1.11 pounds.

Can I Monitor My Remaining Battery Life?

Absolutely, the slightly used Inogen One G4’s control panel displays both a battery gauge as well as the remaining battery life in a percentage. All directly accessible on the home screen.

How Long will the slightly used G4 Double Battery Last?

Enjoy double the battery life of the single battery, the double battery offers up to 4.5 hours of portable operation on a pulse setting 2.


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Mobility Return Policy

1st Class Medical is here to make sure our customers are satisfied with our products and services. Our return policy allows you to return or exchange your item purchased within 30 days of receipt, guaranteed. With our 30-day money back guarantee, if you need to return your device you are responsible for all shipping/handling costs.

Upon receipt of your item please inspect the box for damages. Once you open your package inspect your unit, we test every unit before it leaves our facility, but sometimes units do arrive damaged or defective. We apologize for this inconvenience and ask that you contact us immediately.  If a unit is damaged in shipping, we must notify the shipping company within 48 hours.  We cannot be responsible for shipping damage if you wait longer than 48 hours to notify us.

Within 30 days after your unit has arrived, if for any reason you are not satisfied we will refund your money 100% (excluding shipping & handling) for all new units.  The product must be returned in new condition, in original boxes, and with all paperwork, parts and accessories in order to satisfy our return policy.  We cannot accept C.O.D. deliveries. For your protection, we recommend that you use UPS, FedEx or Insured Parcel Post for your return.

We can’t sell a product as new if it has been damaged or used.  The 100% return policy is only valid if you contact us within the first 30 days and the unit remains in unused/like new condition, has not been used in a smoke-filled environment. Units must be returned in original packaging for 100% return policy.  If a unit has been opened and used within the home a 15% re-stock will apply to your return plus shipping charges/handling charges.  

All returns require a return authorization. Please contact us, 1-800-520-5726, so that we can assist you with doing so. You must pay for return shipping costs.  When returning the unit to us please insure the package for the full value.

Within the 30 days, please contact us and will we assist you with a refund.  All returns require a return authorization. You are responsible to pay for return shipping costs.  When returning the unit to us please insure the package for the full value.  Contact us to receive a return authorization.1-800-520-5726 

After 30 days, we apologize for any inconvenience, but we cannot refund or exchange your unit.

All items returned without a return authorization, including items returned to us for refusal delivery, are subject to the 25% restocking fee. 

Any units that are returned due to customer-caused damage, the customer is responsible for all parts, labor, and shipping charges to return the unit to us for repair.

All new units come with a factory warranty.  Warranty repairs can be handled by contacting us 1-800-520-5726. You are responsible for all shipping costs on warranty work.