Portable Oxygen Concentrator batteries/accessories

OxLife Liberty Battery is lightweight, rechargeable battery and will last up to 4 hours on a pulse setting of 2 or 1.5 hours on a continuous setting of 1.5.
$314.99
Experience ultimate freedom and flexibility with the GCE Zen-O Battery - 12 Cell. Specifically designed to power your Zen-O™ Portable Oxygen Concentrator, this 12 cell rechargeable lithium ion battery ensures that you can enjoy uninterrupted oxygen therapy wherever life takes you.
Black neoprene Inogen One G4 Carry Bag with mesh panels for ventilation, clear quick-view portal, and openings for power cord and oxygen outlet port.
The Inogen One G5 Particle Filter is designed to keep your portable oxygen concentrator running efficiently by filtering out dust, pet hair, and other airborne contaminants.