The really cheap ones I have off ebay take forever to charge up my spare batteries for my galaxy 5, like 6 hours or more, which is faster than the phone uses them sometimes.

Is there any desktop chargers available that will charge in a reasonable amount of time like an hour or less? Ideally USB powered so I can have one in the car too.

I have tried a generic plugin charger with 2 movable pins on it, and it also is really slow. I am guessing as they dont connect to the thermistor pin on the battery that they keep the current really low so to never overheat the battery.