When I was looking around, one of the things that I checked was the power output of the charger. Some only output 500mA. The standard Nokia wall charger outputs 1.2A (from memory). The best I could find was in Halfords [uk]. They do a multi-with-lots-of-adapters type charger that outputs 1A :-)

It's also got a retractable cable for easy stowing.

I've been using it for a few months now with no problems at all. It can cope with Music playing over FM and Sygic GPS running at the same time, and still have a small about of juice left to charge the battery.

I would recommend it.

I think it is called the Halfords Ultimate Charger. http://tinyurl.com/38r5wut