A Mushroom That Fights Vampires
As energy costs go up and more people worry about saving money, “vampire power” becomes something to worry about. When an electronic device is unplugged from a charger, it still draws current, because the charger has a transformer in it. It isn’t much, but it can add up over time if you have a lot of devices. More importantly the total amount of power drawn from every household that has an idle cellphone, tablet, and laptop means more greenhouse gases.
Bracketron, an Edina, Minn.-based maker of electronic accessories, has an answer. It’s the Mushroom GreenZero line of chargers, which all automatically cut off all power use when a USB-powered device is fully charged or disconnected. The green top, when pressed, starts charging the device connected to it, so it only starts powering when you want it to. There are three models: micro-USB, 30-pin Apple devices, and USB, priced between $25 and $30.
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