Inogen One G4 External Battery Charger

by Inogen

Inogen One G4 External Battery Charger

The Inogen One G4 portable oxygen concentrator is half the size of the Inogen One G3 version. What is more, this device became famous by providing exquisite independence for its users. More exactly, the Inogen One G4 can be charged both at home or out of it. With the possibility to charge the G4 on the go, users can enjoy the freedom they deserve.

Like any other accessory of the G4, the external battery charger is designed in order to simplify the life of the Inogen One users. The accessories’ main function is to extend the battery life and power the unit, simultaneously protecting the whole device. The Inogen One G4 External Battery Charger is a unique power source which allows charging for both the single and the double batteries.

Key Features

  • 3.5" x Wide x 3.5" Long x 1" High Docking Station
  • 4" Wide x 2" Long x 1" High, 3 feet cord AC Adapter
  • 1 foot Power Cord
  • Weighs 2 pounds
  • 2.5 hours charging time for the single battery
  • 5 hours charging time for the double battery
  • LED Indicator Light - Full charge
  • AC power supply included
  • Small and lightweight
  • Easy for transport and carrying
  • 1 Year Manufacturer’s Warranty
  • FAA Approved

Charging time

The Inogen One G4 External Battery Charger is considered as one of the most practical and simple optional accessories of the device. Inogen understands the needs of its customers so it continues to create high-quality products to improve your convenience and quality of life.

No matter if you are at home or on the road, the external charger provides each user with the possibility to use the accessory anywhere, anytime.

Fully charging the batteries outside the G4 unit takes less than 5 hours. More specifically, a fully depleted G4 single cell battery can be charged to full in 2.5 hours. When it comes to a fully depleted G4 double cell battery, the action can be completed in less than 5 hours.

LED Indicator Light

Even though the manufacturer provides the approximate time of charging, as a user you can determine the exact time that is taking your external charger to charge the batteries. In order to track the charging process, you can simply look at the LED Indicator light. Its main function is to display the level at which the batteries are charged. Once the process is finished, you are ready to go!

AC power supply

When it comes to power supplies, the Inogen G4 already comes with a power cord. However, the external battery charger comes with its own power supply. But what does this mean for you as a customer?

The combination of two power cords works great while sleeping. While using the original power cord with the G4, you can simultaneously charge with the second power supply. So, the second battery can be charged while the oxygen therapy is still going on.

Minimizing the charging time

As mentioned above, the G4 device comes with its own AC Power Supply, a Single Battery and a DC charger. What this means is that the battery must be charged while connected to an outlet. Even though this is the traditional process, it is quite time consuming and may result in spending extra time at home while waiting the batteries to charge.

The role of the external battery charger in this case is that the user may use multiple batteries with it. With the use of multiple batteries, the patient may charge one and simultaneously use the other on the side. This feature, along with a portable oxygen concentrator, is perfect for the ones on the move, no matter if it is work, vacation or simply daily activities.

The Charging Process

The charging process with the External Battery Charger is more than simple. First of all, the user needs to plug the power supply cord into an electrical outlet and into the battery charger. Next, slide the battery charger onto the battery. Be certain to click and lock the battery into the charger.

The battery is in its rightful position when a solid red light appears. This indicates that the charging process has begun. On the contrary, a green light indicates that the batteries are fully charged and the process has ended.

Even though the charging is ultimately simple, there are few issues that must be considered. As a user, always make sure to avoid touching the recessed electrical contacts of the external charger. This action may damage the contacts and affect the charging process.

In addition to this, to completely remove the power from the external battery charger, always make sure to remove the plug.

Even though the above-mentioned information provides you with a summary of almost everything you need to know about the External Battery Charger, you may have additional questions.

If you need further assistance on the Inogen One G4 External Battery Charger, feel free to e-mail us at or by simply us a call at 1-800-314-8225.