Portable Emergency AA Battery Charger Extender suitable for the Sony PSP - with Gomadic Brand TipExchange Technology Built using the unique Gomadic TipExchange Technology that protects your investment by providing the ability to upgrade charging ports by simply swapping physical connectors. Integrated circuitry regulates output voltage specific to the Sony PSP. Advanced logic maximizes overall charger efficiency. Specification: Input Voltage (4 X AA Batteries), Cable length (6 inches), Dimensions (5.0 X 1.5 X 0.75 inches), Circuit Design (Sony PSP specific), TipExchange enabled (Yes) A must have accessory for the frequent traveler, camper or heavy Sony PSP user. This Gomadic Battery Pack can be reused forever by simply inserting fresh batteries, providing instant power on demand.