inogen one g3 single battery inogen <p>the inogen one g3 single battery powers your inogen one g3 concentrator when you’re away from a power source to give you complete freedom and mobility.</p> <p>with an extra single battery, you can have a backup battery in place while traveling around town or around the country. stay active for a longer period of time with your inogen one! an extra single battery will give you up to 4.5 hours of battery life.*</p> <p>order yours today!</p> <p>specifications: 8 cell rechargeable lithium-ion battery for inogen one g3 model battery duration: up to 4.5 hours* recharge time: up to 4 hours *battery time varies with flow setting</p>