Thousandshores via Amazon offers the iClever BoostDrive Nano Metal 4.8A Dual USB Car Charger for $10.99. Coupon code "ICCCNANO" cuts it to $6.99. Plus, Prime members receive free shipping. This mini-sized charger measures around 1.6" long, is compatible with 10V-27V wide voltage input, and supports charging two devices simultaneously up to 5V/2.4A per port.