Gomadic Advanced uPro uPro Golf GPS compatible AA Battery Pack Charge Kit &ndash; Portable power built with upgradeable 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. Specification: Input Voltage (4 X AA Batteries), Cable length (6 inches), Dimensions (5.0 X 1.5 X 0.75 inches), Circuit Design (uPro uPro Golf GPS specific), TipExchange enabled (Yes) Integrated circuitry regulates output voltage specific to the uPro uPro Golf GPS. Advanced logic maximizes overall charger efficiency. This Gomadic Battery Pack is uniquely designed to work with both standard (e.g. alkaline) and/or rechargeable AA batteries. A must have accessory for the frequent traveler, camper or heavy uPro uPro Golf GPS user.