A vibrator for your rabbit, ma'am?

Brother, the printer maker, has made a battery that gathers energy from vibrations. The Vibrating Energy Cell is energised merely by shaking the cell, which makes a magnet pass repeatedly through a coil to generate a current.

The Vibrating Energy Cell can be left inside the device it is powering (a TV remote, for example) and energised by shaking the device.

The current is stored within the cell for use in low power devices.The cell will come in AA or AAA size thus making it ideal for powering devices requiring such cells though I doubt they could run electric motors for very long so ma'am will still be requiring a battery charger for her friend whilst her husband is away.

BBC - Vibration packs aim to replace batteries for gadgets

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