Facts about Shake-To-Charge Flashlights
Wednesday, September 30th, 2009A shake-to-charge flashlight can be an invaluable tool in many situations. Because these flashlights rely on an internal electromagnetic mechanism to provide the charge, no batteries are necessary. Shaking the flashlight for a few minutes allows an internal capacitor to store enough electricity for extended use. Although you need to keep shaking the flashlight at regular intervals to provide long-term light, it will not wear out. Most models provide steady moderately bright light for a short distance. The frequency of shaking required and the quality and duration or light depends on the quality of flashlight you buy.
Although some marketing claims are overblown, the utility of a flashlight that will never have dead batteries is undeniable. Keep in mind that it can easily be broken if dropped, but it is relatively waterproof and maintenance free. Since it works on the principle of electromagnetism and contains a magnet it should not be stored or used around sensitive electronics such as computers. The more powerful models can also affect the operation of pacemakers. Shake-to-charge flashlight can be a valuable tool in an emergency situation or for quick repair jobs. The fact that they require no batteries is not only good for the environment, but means that you will always have a functioning light when you need it.