Inogen External Battery Charger with Power Supply for Inogen One G4 Large Product Features Lasts up to

Product Features Lasts up to 6 hours and charges in under 5 hours

The comfort of the Gravity 8 mattress is equally matched by its durability

It is a great option for people who want to take their aerosol treatments anytime

You’ll be amazed with the freedom this little battery gives you

Storage Temperature: 0° - 120° F (-18° - 49° C)

Inogen External Battery Charger with Power Supply for Inogen One G4 Large Product Features Lasts up toThe Inogen One G4 External Battery Charger will charge your Inogen One G4 single and double batteries. If you are active and need to recharge multiple Inogen One G4 batteries simultaneously, then order an extra charger to help you charge more batteries as needed. *Battery not included