I normally charge the PS3 controller by connecting it to the PS3 while its idling, but I guess it's much easier to charge it through my PCs USB port.
Would this work?
Yes the PS3 controller can be charged from a USB port on a computer, and there are also specialised controller charging stations available. It appears that generic AC-to-USB adapters won't work, possibly because the controller requires device drivers on the host or some kind of "handshake" in order to charge.
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