No more worries about running out of battery power! You can back up your system with Lithium-Ion Laptop Battery from Wyse®. It is an external, snap-on, hot-swappable battery and lets you work seamlessly when you are on the move for business trips or vacations. Ideal for use in laptops, this battery enhances the duration of mobile operation. Also, it is compatible with Wyse X90m7 Thin Client and X90mw Thin Client.