Inogen 8 Cell Battery

Works interchangeably with both the Inogen One G5 and Inogen Rove 6 portable oxygen concentrators.
Provides up to 6.5 hours of battery life on a flow setting of 1. The duration decreases with higher flow settings (e.g., up to 4.5 or 5 hours at a setting of 2).
It is lightweight, weighing approximately 1.19 lbs (0.54 kg), which helps keep the total weight of the concentrator system low for portability.
Can be charged while inserted in the concentrator when connected to an AC or DC power supply. It can also be charged separately using an optional external battery charger. A fully depleted battery charges in approximately 3 hours within the concentrator.
Features four lighted indicators on the battery to display the current charge level.