18W Adaptive Fast USB QC Car Charger Smart Detect Ultra Compact Black. 18W Adaptive Fast USB Charger is the latest design from our Quick Charge product line up. Enabled by Fast Charge technology and our Smart Detect technology, it increases the total charging power to 18Watts. When it charges Quick Charge compatible devices, it will reduce charge time by up to 75% compared to conventional chargers. 38% more efficient than the previous version, Fast Charge might be the most efficient USB charging technology in the world. NOTE: Your device must support Fast Charging Feature for 75% faster charging. Otherwise this will charge at 2.4Amp speed. NOTE: USB Cable is NOT included. You need to use your own USB Cable. Ultra Compact Size, only 2in long and 0.8oz. Comes in Bulk Packaging (Non-Retail Package).