There are two Rechargeable Lithium Ion Battery options available - the Single (4-Cell) Battery and the Double (8-Cell) Battery. Both batteries are designed for use with all Inogen One G4 Oxygen Concentrators and the Inogen Rove 4 Concentrator.

The Inogen One G4 single battery (4-Cell) can last up to 2.5 hours at a flow setting of 2 when it is fully charged.

The Inogen One G4 double battery (8-Cell) can last up to 5 hours at a flow setting of 2 when it is fully charged.

The G4 rechargeable lithium-ion batteries are a perfect power source to give you independence and mobility for trips or other activities. 

Batteries will charge while the Inogen G4 is connected to an AC or DC power supply and can also easily be charged with the Inogen One G4 External Battery Charger.