Solar Powered Rechargeable External Battery Pocket Charger for the HP TouchPad - uses Gomadic TipExchange Technology Includes rechargeable internal battery (2000 mah) in a compact design Battery pack can be charged either via direct exposure to the sun or via traditional plug-in power source Continue to use your HP TouchPad for hours OR recharge your device on the go without being tethered to a wall outlet Uses Gomadic TipExchange Tips (HP TouchPad tip is included) which protects investment with easy upgrades that allow users to charge multiple mobile devices with the same solar power pack Charging kit includes Solar Powered Charging Battery Pack, USB charge cable, and two charging tips for both the HP TouchPad and battery pack. Backed by a lifetime warranty!