Re: Blackberry torch 9810 charging
JS is right, to charge off of a PC you need to have the driver installed so that the PC will switch the port to high current mode.
As for charging in cars, you need a cable designed to charge a BlackBerry device, for essentially the same reason. If you have a cigarette lighter to USB voltage converter then the cable that came with your 9810 should work.
My other Blackberry is a PlayBook.