Who hasn't left their various mobile devices plugged in long after they're fully charged?
A new product -- still a prototype but expected to go on sale soon -- aims to solve the problem of so-called vampire power. Plug your device into the Mushroom GreenZero charger, and when your device is fully charged, the charger will turn off automatically. SmartPlanet's Sumi Das takes a closer look at the handy device.
This video originally appeared on SmartPlanet with the headline "Charging devices eliminate vampire power."
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