Advanced Gomadic 2 in 1 Auto / Car DC Charger Compatible with Logitech Harmony 900 with Foldable Wall AC Charging plug &ndash; Amazing design built with TipExchange Technology Intelligent circuit tailors precise output voltage (including resistor configuration) specific to the Logitech Harmony 900. 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 Logitech Harmony 900 from being damaged by power surges, overcharging and/or short-circuiting. 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). A best-selling product from Gomadic Corp, one of the leaders in consumer electronic charging accessories.