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Features
- External (off-device) charger for Inogen One G3 batteries
- Charges both single and double G3 batteries
- Run the concentrator on one battery while another charges
- Compact and easy to carry
- Inogen One G3 batteries only
- Ships free
In short
A charged spare, always ready
The BA-303 is the genuine Inogen One G3 external battery charger. It recharges G3 batteries outside the concentrator — including single and double batteries — so you can run the device on one battery while another charges. For Inogen One G3 batteries only.
Rotate G3 batteries instead of waiting on the concentrator to charge, so you can stay out and independent longer.
✅ Inogen One G3 batteries
❌ Not for the G4, G5, or Rove 6
Shop the compatible concentrator: Inogen One G3
Charge a spare, swap and go
Keep a full G3 battery ready so you can swap in seconds.
Single and double batteries
Charges both G3 battery sizes off the device.
Genuine Inogen part
Correct charge profile to protect G3 battery health over time.
Details
What's included
One genuine Inogen One G3 external battery charger. Batteries sold separately.
Why genuine matters
A genuine charger uses the correct charge control for G3 batteries. The wrong charger can undercharge, overheat, or shorten battery life.
Frequently asked questions
Does it power the concentrator?
No. It charges G3 batteries off-device. To run the G3 from the wall or car, use the G3 AC or DC power supply.
Does it charge single and double batteries?
Yes — it charges both single and double G3 batteries.
Will it fit newer Inogen models?
No. The BA-303 is for G3 batteries only. The G4, G5, and Rove 6 use their own chargers.
Not sure this is the right part?
Send us a photo or call — we'll confirm the exact part for your unit.
Call (786) 755-8063| Dimensions | 3.5 × 3.5 × 1 in |
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