When you plug your phone or other device into the wall to charge, it will continue to draw power until you unplug it, regardless of whether or not it has a full battery. While it isn’t using a large amount of energy, it’s still money that you are wasting, and it’s not exactly helping the environment or anything. Well this Green Wall USB Charger can help put a stop to all of that.
This wall charger can power up to four gadgets at once, and has a very special feature. You can select how long you want the device(s) to charge. You can choose two-hour intervals from 2 to 8 hours. After that time has passed, the charger will stop, and will no longer draw any energy. We’re not sure of a price or release date, but VogDUO should be announcing this at next month’s CES in Las Vegas.
A nice intermediate step, but ultimately not that useful: Do you set it for too short a time and undercharge, or too long a time and still waste electricity?
A better solution is a current draw limiter such that once the batteries are full charged and stop drawing current, the unit shuts down – only cycling up periodically to ensure the attached units stay topped up.