External Battery Charger
The Inogen One G3 External Battery Charger will charge your Inogen One G3 portable oxygen concentrator single and double batteries. Includes Charger, Power Supply and AC (Wall) Electrical Cord.
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Convenience of this charger for my portable concentrator is wonderful. Frees up the use of my concentrator for longer usage.
So far in a few weeks it is doing what is advertised