Vibration-powered generating batteries recharge when shaken

Battery generator
In this AA-size prototype, the generator and rechargeable battery are installed in two different cases. The voltage of the capacitor is 3.2V or lower. Image credit: Brother Industries Ltd.

( -- Whether you're away from electricity or you don't mind expending a few of your own calories, a new generator allows you to recharge it simply by shaking it. Its developer, Brother Industries Ltd, says that the "vibration-powered generating battery" can replace AA and AAA batteries for devices that have a power consumption of about 100 mW, such as a flashlight or remote control.

Although the new gadget is technically a small generator, it is designed to fit inside a battery-shaped case. Inside the case is the generator as well as a that has a capacitance of about 500 mF. The company has developed prototypes in which the generator and capacitor both fit into a single battery-size case, and in which the generator and capacitor each have their own battery-size case, in which the capacitor has a greater voltage.

To recharge the unit, the entire device containing it (such as a flashlight or remote control) can be shaken. The company hopes that the new approach to recharging could cut down on the amount of batteries used in low-power electronics.

"The new generator will semipermanently eliminate the need to replace batteries and contribute to reducing the amount of wastes," Brother Industries said.

The company will exhibit the vibration-powered generating battery for the first time at the Techno-Frontier 2010 exhibition later this week in Tokyo. The demonstration will include using the generator in an LED flashlight, a TV remote control, and a remote control for lighting equipment.

More information: via: Tech-On

© 2010

Citation: Vibration-powered generating batteries recharge when shaken (2010, July 18) retrieved 31 May 2023 from
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.

Explore further

New Battery Technology in Development to Potentially Double Laptop Run Times


Feedback to editors