Gomadic High Output Home Wall AC Charger designed for the Amazon Kindle Fire / Fire HD with Power Sleep technology - Intelligently designed with Gomadic TipExchange 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 Amazon Kindle Fire / Fire HD (accurate to 0.1v!) Advanced state-of-the-art internal circuitry protects the Amazon Kindle Fire / Fire HD from power surges, overcharging, and short-circuiting, to significantly extend the internal battery lifecycle. 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 Amazon Kindle Fire / Fire HD). TipExchange Technology protects your investment, by providing a means to change/upgrade your charger by simply swapping the physical charging tip. (Charging tip for Amazon Kindle Fire / Fire HD) included with additional tips sold separately) Charger works on power voltage levels worldwide by supporting a wide input range of 100-240v AC / 50-60 Hz.