<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>