There are two Rechargeable Lithium Ion Batteries available for the Inogen One G3 — the Single (8-Cell) Battery and the Double (16-Cell) Battery. Both batteries are designed for use with all InogenOne G3 Oxygen Concentrators.
Inogen One G3 batteries are perfect for trips to the store, seeing a movie, or a dinner out with friends. For longer trips keep two batteries on hand, or use the 16-Cell Battery to make sure that you can get up and go whenever you want and wherever you want. (Fly from New York to London on one battery!)
Inogen One G3 batteries will charge automatically while in the InogenOne G3 system (when connected to an AC or DC power supply), or using the External Battery Charger.