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Shake Flashlight
A shake flashlight uses the power of physics to generate electricity and light without the use of batteries. The flashlight works typically through the use of a strong magnet that slides through a coil of copper wire, generating a current that is stored and eventually used to power the bulb and creating light.
A shake flashlight is perfect for emergency uses such as during natural disasters. Owners of these types of flashlights typically do not have to worry about replacement batteries or making sure the batteries are charged. A typical flashlight requires about twenty seconds of shaking to produce two minutes of light.
A shake flashlight is much better suited for quick bursts of light, rather than longer-term usage. But most of these types of flashlights are compact, maintenance-free, and produce bright light visible for more than a mile. Water and weatherproof variations are also available.
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