Gomadic Intelligent Compact AC Home Wall Charger suitable for the Garmin nuvi 57 / 58 LM LMT - High output power with a convenient, foldable plug design - Uses TipExchange Technology Power Sleep"" feature reduces vampire power draw 99%. Charger will consume less than 0.1W of power when in ""dormant state"" (e.g. not connected to the Garmin nuvi 57 / 58 LM LMT). Advanced state-of-the-art internal circuitry protects the Garmin nuvi 57 / 58 LM LMT from power surges, overcharging, and short-circuiting, to significantly extend the internal battery lifecycle. Gomadic Powerful High Wattage wall charger for home or travel use. Customized circuit design is based on the latest in power regulation and is tailored to the precise output voltage and resistor ID requirements of the Garmin nuvi 57 / 58 LM LMT (accurate to 0.1v!) Charger works on power voltage levels worldwide by supporting a wide input range of 100-240v AC / 50-60 Hz. A quality product intended to be the last home/travel charger you ever buy! This product is backed by the Gomadic Lifetime Warranty.