Gomadic Advanced TomTom XL 340S compatible AA Battery Pack Charge Kit &ndash; Portable power built with upgradeable TipExchange Technology Integrated circuitry regulates output voltage specific to the TomTom XL 340S. 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 (TomTom XL 340S specific), TipExchange enabled (Yes) Built using the unique Gomadic TipExchange Technology that protects your investment by providing the ability to upgrade charging ports by simply swapping physical connectors. A must have accessory for the frequent traveler, camper or heavy TomTom XL 340S user. This Gomadic Battery Pack can be reused forever by simply inserting fresh batteries, providing instant power on demand.