PS3 controller should work with any mini USB cable, you can buy a 6 foot amazon one for like $5.50 on amazon.

Or you can buy a charging dock (I bought one for $15 a couple of years ago) and alternate. Play one until it goes dead, then put the dead one on the charger, and pull the fresh one off the charger.

edit 1:
On the PS store redesign, when I first installed it, it was slower, but I think in the interim they have improved the performance. What annoys the hell out of me about it is they took all this time to rebuild the interface from the ground up and they didn't add any way to filter or sort your "my downloads" list.

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