Advanced Gomadic 2 in 1 Auto / Car DC Charger Compatible with Mio Knight Rider with Foldable Wall AC Charging plug &ndash; Amazing design built with TipExchange Technology 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 Mio Knight Rider from being damaged by power surges, overcharging and/or short-circuiting. Intelligent circuit tailors precise output voltage (including resistor configuration) specific to the Mio Knight Rider. This ensures battery is safely and efficiently charged. Gomadic TipExchange Technology protects your investment by providing a means to change/upgrade your charger by simply swapping the physical charging tip. (Charging tip for Mio Knight Rider included with additional tips sold separately) Non-coiled, straight cable design allows for easy routing around your vehicle trim for a more professionally installed look. Durable construction is built to last.