If you have an Android phone that has a microUSB charging port, you may want to consider picking up the BlackBerry Premium Charger as a spare charger. With 1.8amp charging power, it'll help rapid charge your phone. Not all devices will support faster charging, but the ones that do will take advantage of it and no harm will come to those that don't.
A lot of members of the Android Central team use this charger on their microUSB Android (and other) devices. It retails for $39.99, but you can usually get it for around $23 at ShopAndroid.com.
Buy from ShopAndroid: http://www.shopandroid.com/blackberry-premium-micro-usb-18a-charger/5A17A8102.htm
Buy from ShopAndroid Canada: http://ca.shopandroid.com/blackberry-premium-high-capacity-wall-charger-2x-faster-charging-18a/5A17A11016.htm
The Mobile Nations World Tour continues with CrackBerry Kevin doing some reporting on Android Central.