Traditional flashlights are powered by a battery and use conventional light bulbs to produce light. However, within the last ten years a new type of flashlight has hit the market. LED flashlights are increasing in popularity because they do not use as much battery energy as a flashlight with traditional light bulbs.
LED stands for light-emitting diode. LEDS are similar to very tiny light bulbs. Put very simply, they are able to light up because of electrons which move in a semiconductor material.
The main advantage of LED flashlights is that you will get much more use out of the battery. Some flashlights can run for hundreds of hours on one set of batteries. LED flashlights also tend to be more durable than traditional flashlights. Also, LED flashlights are made so that the light remains constant even as the battery is dying. This is an advantage over traditional flashlights which grow dimmer as the battery wears out.
At lower powers, LED flashlights do not generate much heat at all. At the higher powers, however, they can generate heat. You will usually find that high powered flashlights have an aluminum body which is used because of its thermal properties.
There are many types of high quality LED flashlights. Surefire flashlights are some of the best on the market. They make palm size flashlights which can be used in a variety of circumstances. The flashlights are extremely durable. One feature that is particularly useful is the ability to switch between output levels. You can run the flashlight on a lower output level when you do not need a lot of bright light.
The advantage of this is that your flashlight will be able to run for a very long time on one set of batteries. If you need bright light, you can use the same flashlight but at a higher output level. Some Surefire flashlights allow you to switch between six different output levels. Streamlight flashlights are also high quality and have many of the same features.
Many people are using LED flashlights when they hike or go camping. It is also wise to include an LED flashlight in a disaster kit because you will not have to worry about packing a lot of extra batteries. You will also find organizations such a police and fire departments using LED flashlights because of their durable nature. LED flashlights are definitely a marked improvement over traditional bulb flashlights.
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