Whenever I travel on business or on holiday I end up lugging around a bunch of cables, plug-in power supplies and adaptors for the laptop PC, BlackBerry, Apple iPod, digital camera and other electronic devices.

Ensuring I have access to power while travelling is always a headache, particularly if I am visiting emerging countries. After all, there are few things as frustrating as running out of battery power in the middle of a laptop project or watching helplessly as your BlackBerry "powers down".