Available at AT&T stores starting in May (for an unknown price), the AT&T Zero Charger is the world's first wall-based USB charger that draws absolutely no power when it's not refilling a cellphone. Now follow suit, everyone else. [AT&T]
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UPDATE: It looks like another company beat AT&T to it and did things better. From Volt-Star:
It is our understanding that the AT&T device automatically shut down when the device or cell phone is unplugged. The VoltStar Eco Charger goes one step farther and shuts down once the phone is charged.
DISCUSSION
Not the world's first - the iGo Green line has been doing zero power for ages.
But I won't let that get in the way of AT&T making false claims, they are good at it.