The Oxlife Liberty External Desktop Battery Charger is a compact and efficient charging solution for Liberty 2 portable oxygen concentrator batteries. Featuring its own AC power supply, it plugs into any standard wall outlet, allowing you to charge batteries separately from the unit. With a built-in battery charging gauge and easy-to-read indicator lights, you’ll always know when your battery is fully charged. This charger is perfect for those who need multiple batteries ready for extended use, ensuring you stay powered up wherever you go.