Amazon currently offers the Anker 40W 4-Port USB Wall Charger available for just $16.99. That is down from $24.99, which makes this a great deal, but you do need to use the promo code ANKERUSB at checkout.
This wall charger from Anker, has four USB ports, which makes it great for taking on the road and traveling with. As you can use one wall outlet to charge up to four devices, definitely convenient. This wall charger has PowerIQ Technology and not Quick Charge 3.0. But with PowerIQ Technology, you can go ahead and still get fast charging here. It'll charge up 2.4A, if your smartphone can handle it. This charger can do 2.4A for each port, or 8A each. So that means that if you are using all four ports simultaneously, you will get 2A per port, which is still pretty good and somewhat fast.
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.