The best USB car charger (Aukey 4 port/48W) is just $7 Prime shipped, Lumsing 6000mAh Power bank: $10

Aukey Direct via Amazon has its 9.6A / 48W 4-Port USB Car Charger for $12.99. When you use the code 72TU2QWZ the price drops to only $6.99 Prime shipped. That’s $6 off the sale price and the lowest we’ve seen it go. Most cars come with a paltry 1A USB port (if any at all) which can barely keep up with your devices usage especially if you are using them for music or navigation. 

We love this charger (review) which can detect the input current of your devices to maximize both compatibility and charging speed up to 2.4 amps each port or 9.6 amps overall. Amazon shoppers gave it 4.7/5 stars. This is the best car charger you can buy and it is $7 shipped today. 

Also, ATC LLC via Amazon offers the Lumsing 6000mAh Ultra Slim Portable Power Bank for $14.99. But when you use the code 8TDPFOVO the price drops to $9.99 Prime shipped. That’s $5 off the regular sale price and a match to our previous mention for the lowest we’ve seen. It has the power to charge an iPhone 5S three times, a Galaxy S4 twice, or an iPad mini once. It received 4.5/5 stars from Amazon customers.