Volta Ext 2100 mAh Battery for 5G Ipod Ext Docking Pack For 5G Video Ipod, iPod Classic, iPod Touch, and iPhone 3G, 3GS, and 4G Includes - Volta external battery booster, USB 2.0-to-dock connector cable, Spacer pad (for use with 30GB iPod with video models), Assembly clip, Belt clip, User's Guide Lithium-polymer, 2100 mAh battery, Charges an iPod up to 3 times from a single charge Elegant black aluminum casing featuring 4 LEDs on the front to indicate charging status and remaining charge levels Integrated with an iPod, Volta stands for easy viewing Supports: iPod classic, iPod with video, iPod touch, iPhone 3G, iPhone 3GS, iPhone 4G, iPod nano, iPod 4G (20GB Black & White only), and iPod mini