Does anybody has a good idea what is a really good high power car charger?
That really can even charge the N900 even when fully used (so open data connection, IM clients connected and navigation with screen constantly on?)

Many micro usb chargers for the car cant really keep up or just stop charging.

Nokia tells us that this is really a high power charger:

http://europe.nokia.com/find-product...-charger-dc-10

and it is nice that it is retractable.. anybody has any experience with it?