The Anker 25W charger is a travel power adapter for many phones and other devices. It has charge speeds of up to 2.4 amps. The input voltage for this is 110-240V which should be perfect for travelling as you'll be able to plug it in anywhere.
You get Exclusive PowerIQTM Technology. There are 2ports with PowerIQ™ to detect your device and deliver its fastest possible charge speed up to 2.4 amps per port or 5 amps overall. This device offers all-in-one charging with 3 standard ports charge most Android devices at full speed - as well as many other devices.