Any where you look you can find some form of energy. These batteries from Brother can be physically shook to be recharged. Hard to believe I know. It’s not clear how much energy can be produced by physically rattling the batteries, but our guess is that the ratio is rather low, as is the case for most green tech, such as solar cells.
The official name is Vibration-powered Generating Batteries and they probably won’t be commercially available for a long time. The good news is that they’ll come in the same standard batteries sized we know and loathe, AA or AAA. Brother says they’re designed for products that consume 100mW or less, such as a TV remote control.
The batteries juice up by using an electromagnetic induction generator and an electric double layer capacitor. All said and done it’s probably similar tech to those watches or flash lights that power themselves by the motion of your body. Not new tech, but a new application.