Remove the battery from the device with the cables still connected.

Carefully lift up the mother board located at the base of the Zune. Unclip the orange ribbon cable in the same manner as in the previous steps.

Use a soldering iron to desolder the battery connections from the motherboard.

Be cautious when using a soldering iron—it gets extremely hot and can cause burns. Always work in a well-ventilated area, as soldering produces fumes that can be harmful if inhaled.