Unique Gomadic Car and Wall AC/DC Charger designed for the Plantronics Voyager 510 &ndash; Two Critical Functions, One Great Charger (includes Gomadic TipExchange) Intelligent circuit tailors precise output voltage (including resistor configuration) specific to the Plantronics Voyager 510. This ensures battery is safely and efficiently charged. Broad input voltage range of 12-24VDC and 100-240VAC respectively. Permits charging via vehicle and home outlets worldwide! State of the art, advanced circuitry prevents the Plantronics Voyager 510 from being damaged by power surges, overcharging and/or short-circuiting. A best-selling product from Gomadic Corp, one of the leaders in consumer electronic charging accessories. Power Sleep feature will cut power draw of charger by over 99% when not in use. Charger will draw less than 0.1W of power when in ready state (e.g. not connected).