This product is not currently available for expedited shipping within the continental U.S. Regular ground shipping will be the only option. Other options may be available for non-continental U.S. residents
The 16 Cell Lithium Ion Battery for Inogen One G3 Concentrator can be purchased as a replacement battery or as an additional battery for the G3 concentrator. Double the power of the original 8 cell battery and increase runtime. When placed on the lowest Pulse Dose setting, the 16 Cell Lithium Ion Battery may operate up to 9.5 hours.