If you need to charge your USB devices on the move, then there are plenty of options. However, if you need to power something a little bigger, like a laptop, then you need a power inverter. Why not get something that can do both tasks. Check out my review of the E:Can.
Product: E: Can Power Inverter
Price: £39.95
Supplied by: Ring Automotive
Contact: +44 (0)113 213 7389