Rapid Charger KIT for Amazon Kindle Fire HDX 7 Tablet with Micro USB 2.0 Cable will power up in a blink and up to 40% faster! (BLACK / 12W / 1.5A) Rapid Charge your Kindle Fire HDX 7 up to 40% faster than the 1A original charger! Accelerate your charging with new supported Rapid Charge chips that work on newer Micro-USB 2.0 and 3.0 high speed devices. Use it at home, at the office, or take it when you travel around the world with dual 110v-240v current adaptability. The first digital stage quickly charges 98% at Full Quick Charger power, then second stage safely goes to 100% at accurate finishing speeds. Top rated circuitry prevents Over-Charging / USB to AC USA Plug / Input 100-240V, Output 5V at up to 12Watts/1.5A.