Traditional flashlights are powered by way of a battery and use conventional light bulbs to produce light. However, in the last a decade a new form of flashlight has hit the market. LED flashlights are increasing in popularity because they don't use the maximum amount of battery energy as a torch with traditional light bulbs.
LED stands for light-emitting diode. LEDS are similar to very tiny light bulbs. Put very simply, they can light up as a result of electrons which move in a semiconductor material.
The main benefit of LED flashlights is that you will get a lot more use out from the battery. Some flashlights can run for hundreds of hours on a single pair of batteries. LED flashlights also are generally stronger than traditional flashlights. Also, LED flashlights are manufactured so that the light remains constant even while the battery is dying. This is a benefit over traditional flashlights which grow dimmer while the battery wears out.
At lower powers, LED flashlights don't generate much heat at all. At the bigger powers, however, they are able to generate heat. You will most likely see that high powered flashlights have an aluminum body that will be used due to its thermal properties.
You can find various types of good quality LED flashlights. ShadowHawk X800 flashlights are some of the greatest on the market. They make palm size flashlights that are often used in several different types of circumstances. The flashlights are extremely durable. One feature that is very useful is the ability to switch between output levels. The benefit of this is that your flashlight will be able to operate for a lengthy time on a single pair of batteries.