LEDs or Light Emitting Diodes have been around since the 1920's when it was first discovered by a Russian scientist. The LED has been used in various light applications since then because of its power efficiency to emit bright light on a small amount of energy. LEDs are used in many electrical appliances, streetlights, signage and car tail and headlights. Because of its versatility and ability to emit bright light even on small batteries it is now used in flashlights.

The best LED flashlights in the market may be a bit expensive than the traditional flashlights, but they can be worth the extra money when it comes to the brightness and durability of the LED flashlights. Most LED flashlights will run on AA or AAA batteries and can last longer than the traditional flashlights. Some batteries even use lithium batteries for a longer run time. There are also LED flashlights that come with rechargeable batteries. And because of the LED's capability to be energy efficient, you may not need to replace the batteries as often unlike with the traditional incandescent bulb flashlights.

LED flashlights also light up much faster than incandescent bulbs. From the time that you switch it on, it emits the strong light that you need. With traditional incandescent bulbs, it may take seconds before the bulb gives it full luminescence. The LED bulbs also don't burn out easily. It may take years before the LED bulb gives out so you don't have to buy extra bulbs in case the bulbs get busted like in regular flashlight bulbs. Gone are the days where you need a flashlight and can't use it because the bulbs are busted. With LED bulbs, even if you don't use it often, you can be assured that the bulbs won't run out on you.

Some of the best LED flashlights are compact flashlights but give off bright light for such a small size. There are LED flashlights that are the size of a small pen light but can give the brightness of a small incandescent bulb. These handy flashlights can be worn as key chains so that you can use it in any case of emergency or black out.

There are also LED flashlights that are waterproof. This makes it ideal for camping or for sailing trips because you need not worry about the batteries or the flashlight getting busted because it got wet. The best LED flashlights are also made to withstand shock. So even if you drop the flashlight, you don't have any worries of the bulb breaking and plunging you to darkness if ever that happens.

LED flashlights can be found in most store shelves nowadays. There are LED flashlights that are affordable and those that are expensive are those LED flashlights that are multipurpose and may require extra batteries because of the number of LED bulbs it has installed. The handy pen light LED flashlight may cost as much as the regular bulb flashlight, but the LED flashlight can be more dependable.