Only you can prevent vampire power: when gadgets are left plugged into a wall outlet, most chargers still unnecessarily suck up a fair amount of juice, a wasteful and inefficient process. To save on your electric bill and leave some extra energy for everybody else, Bracketron's introduced a new lineup of eco-friendly chargers that keep those nasty vampires away by detecting when a device is at full charge and shutting off the incoming power. The Mushroom GreenZero charger won't start doing its thing until you push the large green button (seen above) with your hand or foot; the Stone GreenZero ultimately does the same thing but in a more travel-friendly package. Lastly, the Stone Battery is an external 1,000mAh power source that also shuts off once the device is fully charged. All of the options are compatible with iPhones and devices with micro-USB ports. This isn't anything we haven't seen before, but we always welcome healthy competition in this field. All of the products will be ready for distribution to retailers by March 2012. Instead of siding with Team Edward or Jacob, how about coming together and joining Team Green? Check out the presser for the details.