Gomadic Portable AA Battery Pack designed for the Magellan Roadmate 1700 1700LM - Powered by 4 X AA Batteries to provide Emergency charge. Built using 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 (Magellan Roadmate 1700 1700LM specific), TipExchange enabled (Yes) Integrated circuitry regulates output voltage specific to the Magellan Roadmate 1700 1700LM. Advanced logic maximizes overall charger efficiency. Internal circuit designed to protect your Magellan Roadmate 1700 1700LM from power surges, overcharging and short circuiting. The rugged composite design is built to last. This product is backed by our comprehensive Gomadic Lifetime Warranty.