This Mobi Products Battery Cradle allows you to easily synchronize and charge your Treo with any USB-enabled computer. Just connect the cradle to your computer's USB and you are set. The Treo is charged through your computer's USB port.

The cradle also features a spare battery charger - great to have if you have multiple batteries. If you want to use the cradle's spare battery charger, you also need to connect the bundled AC adapter. The AC adapter does not charge the Treo, it only provides power to the battery slot.

The spare battery charger will also charge most extended batteries.