Inogen One G3

Yes! The Inogen One G3 can be used without a battery as long as it is plugged into a wall outlet with the AC power supply or a vehicle with the DC power supply.

Yes, the Inogen One G3 can be used while it is plugged into an AC electrical outlet or a DC vehicle outlet. The external power will run the unit and charge the battery at the same time.

The Inogen One G3 provides only pulse flow oxygen, which requires sufficient inhalation to trigger the pulse of oxygen. While many oxygen users can use a pulse unit while sleeping, others tend to breathe too shallow or through their mouth while sleeping and are unable to trigger the pulse. These oxygen users would be best served by using a portable unit that has a continuous flow setting.

There is an air inlet filter that should be cleaned weekly. The G3 also has replaceable sieve columns that are warrantied for one year and will need replacing about every 15-18 months depending on use and climate.