Inogen One G4 AC Power Supply Oxygen Concentrator Filter The top layer of foam

The top layer of foam is high resilient and die-cut

-Power Consumption Continuous Flow at Setting 2: 133 Watts and 140 Watts while charging

AC Power: Universal Power Supply with AC Cord

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Inogen One G4 AC Power Supply Oxygen Concentrator Filter The top layer of foamThis InogenOne G4's Universal AC Power Supply automatically adapts to input voltages from 100V to 240V (50 60HZ) permitting use with most AC (Wall) power sources throughout the world. (A plug adapter may be needed to convert plug connectors for usage outside of North America.) USAGE: When plugged into wall power this power supply WILL charge any battery installed in your G4 concentrator regardless of whether the device itself is currently turned on.