The Bolse 25W 5A 3-Port USB Car Charger is retailing for US$14.99 (S$19) on Amazon.

When I heard of this product, I thought there are three USB ports, but actually there are only two USB ports and one attached Micro USB cable. The description actually meant you can charge three devices at one go because it is able to output a maximum of 5A.

Bolse 25W (5A) 3-Port USB Car Charger - Box Front
Bolse 25W (5A) 3-Port USB Car Charger – Box Front