Inogen BA-303

Inogen One G3 External Battery Charger Instruction Manual

Model: BA-303

1. Introduction

The Inogen One G3 External Battery Charger (Model BA-303) is designed to provide a convenient and efficient method for charging Inogen One G3 standard and extended batteries independently of the Inogen One G3 portable oxygen concentrator. This manual provides essential information for the safe and effective use of your charger.

Inogen One G3 External Battery Charger with a battery inserted

Image: The Inogen One G3 External Battery Charger with an Inogen One G3 battery inserted, ready for charging.

2. Safety Information

Please read all safety instructions before using the Inogen One G3 External Battery Charger. Failure to follow these instructions may result in electric shock, fire, or serious injury.

  • Use only with Inogen One G3 standard (BA-300) and extended (BA-316) batteries.
  • Do not expose the charger to water or excessive moisture.
  • Do not attempt to disassemble or modify the charger.
  • Ensure the charger is connected to a compatible electrical outlet (100-240V AC, 50-60Hz).
  • Keep the charger away from heat sources and direct sunlight.
  • If the charger or power cord is damaged, discontinue use immediately and contact customer support.

Legal Disclaimer: Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition. This product is an accessory for a medical device.

3. Package Contents

Verify that all items are present in the package:

  • Inogen One G3 External Battery Charger (Model BA-303)
  • AC Input Cord

4. Compatibility

This external battery charger is specifically designed for use with Inogen One G3 batteries. It supports both the standard (BA-300) and extended (BA-316) Inogen One G3 battery models.

Compatibility chart for Inogen accessories, highlighting Inogen One G3 External Battery Charger (BA-303) compatibility with Inogen One G3 batteries

Image: An accessory compatibility chart showing the Inogen One G3 External Battery Charger (BA-303) is compatible with Inogen One G3 Standard (BA-300) and Extended (BA-316) batteries.

5. Setup Instructions

Follow these steps to set up your Inogen One G3 External Battery Charger:

  1. Connect AC Power: Plug the AC input cord into an electrical outlet.
    Step 1 of charging: Plugging AC cord into an electrical outlet

    Image: Step 1 of the charging process, showing the AC power cord being plugged into a wall outlet.

  2. Connect to Charger: Plug the other end of the AC input cord into the designated port on the external battery charger.
    Step 2 of charging: Plugging AC cord into the battery charger

    Image: Step 2 of the charging process, illustrating the AC power cord connected to the external battery charger.

  3. Insert Battery: Slide your Inogen G3 battery onto the charger until it clicks and locks into place. Ensure it is seated correctly.
    Step 3 of charging: Sliding the Inogen G3 battery onto the charger

    Image: Step 3 of the charging process, showing an Inogen G3 battery being slid onto the charger until it locks.

6. Operating Instructions

Once the charger is set up and a battery is inserted, the charging process will begin automatically.

Charging Indicators

  • Solid Red Light: When the battery is correctly positioned on the charger, a solid red light will illuminate, indicating that the battery is actively charging.
    Step 4 of charging: Solid red light indicates charging

    Image: Step 4 of the charging process, showing the charger with a solid red light, indicating the battery is charging.

  • Green Light: When the green light illuminates, the battery is fully charged and ready for use.
    Step 5 of charging: Green light indicates fully charged battery

    Image: Step 5 of the charging process, showing the charger with a green light, indicating the battery is fully charged.

Charging Times

Approximate charging times are as follows:

  • Standard Inogen One G3 Battery: Up to 5 hours
  • Extended Inogen One G3 Battery: Up to 8 hours
Inogen One G3 External Battery Charger with battery, showing charging times

Image: The Inogen One G3 External Battery Charger with a battery, illustrating the approximate charging times for standard and extended batteries.

For continuous use, consider having multiple batteries and an additional external charger to ensure batteries are always ready.

7. Maintenance

The Inogen One G3 External Battery Charger requires minimal maintenance.

  • Keep the charger clean and free from dust. Wipe with a dry, soft cloth.
  • Do not use liquid cleaners or abrasive materials.
  • Store the charger in a cool, dry place when not in use.
  • Inspect the power cord regularly for any signs of damage.

8. Troubleshooting

If you encounter issues with your charger, refer to the following common problems and solutions:

ProblemPossible CauseSolution
Charger light not illuminatingNo power to charger, battery not inserted correctly, or charger malfunction.
  • Ensure AC cord is securely plugged into outlet and charger.
  • Verify the electrical outlet is functional.
  • Re-insert the battery, ensuring it clicks into place.
  • If issues persist, contact customer support.
Red light flashingError during charging process.
  • Unplug the charger from the wall and remove the battery.
  • Wait a few seconds, then re-plug the charger and re-insert the battery, following steps 1-4 of the setup instructions.
  • If flashing continues, contact your equipment provider.
Battery not fully chargingBattery issue or charger malfunction.
  • Ensure the battery is fully seated and the red light is solid.
  • Allow sufficient time for charging (up to 5 hours for standard, 8 hours for extended).
  • Test with a different Inogen One G3 battery if available.
  • If the problem persists, the battery or charger may require service.

9. Specifications

FeatureDetail
Model NumberBA-303
CompatibilityInogen One G3 Standard (BA-300) and Extended (BA-316) Batteries
Input Voltage100-240V AC, 50-60Hz
Output Voltage15 Volts
Dimensions (W x L x H)3.3 in. x 2.75 in. x 1 in.
Weight0.12 lbs. (approx.)
Standard Battery Charge TimeUp to 5 hours
Extended Battery Charge TimeUp to 8 hours

10. Warranty and Support

For warranty information and customer support, please refer to the documentation provided with your original Inogen One G3 portable oxygen concentrator or visit the official Inogen website.

You can also visit the Inogen Store on Amazon for additional product information and accessories.

© 2026 Inogen. All rights reserved.

Related Documents - BA-303

Preview Inogen One G5 Oxygen Concentrator User Manual
Comprehensive user manual for the Inogen One G5 portable oxygen concentrator. Includes operating instructions, maintenance, troubleshooting, and safety guidelines for the IO-500 system.
Preview Inogen One G5 User Manual
Comprehensive user manual for the Inogen One G5 portable oxygen concentrator, detailing operation, maintenance, safety, and troubleshooting for enhanced mobility and oxygen therapy.
Preview Inogen One G3 Oxygen Concentrator User Manual
Comprehensive user manual for the Inogen One G3 portable oxygen concentrator. Includes setup, operating instructions, maintenance, troubleshooting, and system specifications.
Preview Inogen One G5 Portable Oxygen Concentrator User Manual
Comprehensive user manual for the Inogen One G5 portable oxygen concentrator, covering operation, maintenance, troubleshooting, and specifications. Learn how to use your device safely and effectively.
Preview Inogen One G3 External Battery Charger: Quick Charging Guide
User guide for the Inogen One G3 External Battery Charger (BA-303). Learn the 6 quick steps to charge your Inogen One G3 batteries, including charging times and indicator light information.
Preview Inogen One G4 User Manual: Portable Oxygen Concentrator Guide
Comprehensive user manual for the Inogen One G4 portable oxygen concentrator. Learn about intended use, operation, maintenance, troubleshooting, and system specifications for safe and effective use.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.