Inogen One G3 BA-316 DOUBLE 16-Cell Extended Life Battery for IO-300 Concentrators. All batteries are lightlyused might have scratches or dents, inspected and tested for power, power output, functionality, and cleaned.Batteries after they pass testing to hold at least 90% (or better) charge. The item "Inogen G3 & Oxygo Double Battery 16-Cell Large OPEN BOX BA-316 SAME DAY SHIP" is in sale since Monday, August 30, 2021. This item is in the category "Consumer Electronics\Multipurpose Batteries & Power\Rechargeable Batteries". The seller is "wonderstor" and is located in Thousand Oaks, California. This item can be shipped to United States.