The Inogen Double Battery for G4.
This is the long life Inogen double battery for the G4 portable oxygen concentrator. It is a 16-cell, lithium-ion battery that lasts up to five (5) hours on a single charge*. If you’re looking for the longest battery life possible for your G4, this is it.
You can purchase this double battery separately, or together with your G4 concentrator. If you’re looking for a way to maintain non-stop battery life, add this as a second battery to your system and get the Inogen external charger. This will allow you to always have a fresh battery charging.
*Battery life varies with flow settings