Unique Gomadic Car and Wall AC/DC Charger designed for the Garmin nuvi 2757 / 2797 LMT &ndash; Two Critical Functions, One Great Charger (includes Gomadic TipExchange) Broad input voltage range of 12-24VDC and 100-240VAC respectively. Permits charging via vehicle and home outlets worldwide! Intelligent circuit tailors precise output voltage (including resistor configuration) specific to the Garmin nuvi 2757 / 2797 LMT. This ensures battery is safely and efficiently charged. State of the art, advanced circuitry prevents the Garmin nuvi 2757 / 2797 LMT from being damaged by power surges, overcharging and/or short-circuiting. Backed by Gomadic Lifetime Warranty. This is a quality product that is built to last forever! A best-selling product from Gomadic Corp, one of the leaders in consumer electronic charging accessories.