iVolerDirect via Amazon offers the iVoler Quick Charge 2.0 Car Charger, model no. MPA-QC2-00001, bundled with a 6-Foot microUSB Charging Cable, for $13.99. Coupon code "EA5MMPUJ" cuts it to $8.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it adds $6.07.) That's $21 off list and the lowest total price we could find. It features an 18-watt adaptive port.