Gomadic Portable AA Battery Pack designed for the Garmin Nuvi 1300 - Powered by 4 X AA Batteries to provide Emergency charge. Built using TipExchange Technology Integrated circuitry regulates output voltage specific to the Garmin Nuvi 1300. Advanced logic maximizes overall charger efficiency. 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 (Garmin Nuvi 1300 specific), TipExchange enabled (Yes) A must have accessory for the frequent traveler, camper or heavy Garmin Nuvi 1300 user. Easy to operate. Simply insert batteries, toggle on/off switch and your Garmin Nuvi 1300 will start to charge.