I have two of these , they take up less space than a normal plug and the usb connection is a better fit than most others.

YEP A GREAT USB Charging Plug , for my Innokin clk 1280 , love it :) Cloud 9 is the best site ever :)

This USB wall plug is an absolutely vital piece of equipment, not just to charge batteries, but to free up ports on your PC, laptop or netbook. A desktop system is such an expense and physical inconvenience, needless to say many people are acquiring laptops or netbooks, which have fewer ports, minimizing away with things like multi-usb-hubs and adopting a stress free, as wire free as possible lifestyle. This USB wall plug is absolutely one of the most important inventions in this modern world. I will get another soon.