Weme via Amazon offers the Alxum Aluminum 3-Port USB Smart Car Charger for $12.99. Coupon code "I5HLDTXZ" cuts that to $6.37. Plus, Prime members bag free shipping. That's $7 off list and the lowest price we could find. It features up to 2.4-amp power output and one Qualcomm Quick Charge 3.0 port. It also includes a microUSB cable.