Amazon currently has the Anker 4-port Car Charger on sale for just $12. That's good for $4 off of its regular price. However, that is only if you are using the promo code ANKER312 at checkout.
This car charger from Anker is a 4-port affair, and it includes 48W of power. That's good for 2.4A of output per port. So while it does not support Quick Charging, you do get some rather fast charging, which will work on any smartphone. With this having four ports available, it means that everyone in the car would be able to charge their phone at the same time, using the one car charger in the vehicle. Which can be pretty handy, especially if you are on a long road trip, or spending a ton of time in the car – perhaps due to traffic congestion.
This item is also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap next-day shipping if you need it here extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime by hitting the link below. You'll get 30 days free (if you're a student, you get 6 months), and then it's $99/year. Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits.