Wednesday, June 14, 2006

Batteryless Flashlights, Or Sometimes Known As Forever Flashlights

by Tyson J Stevenson

As the name suggests, a Batteryless Flashlight works without any need of batteries. One can also call it the forever flashlight. These light emmitting tools are also known as Batteryless Torches in countries from a British background. These types of torches need to be shaken back and forth for few seconds and they will give light for many minutes, sometimes even hours. The main features of these Batteryless Flashlights are

1) Never needs any batteries or bulbs
2) Now with magnet and tether strap
3) Compact and water resistant.

Perhaps the biggest feature is that these torches are rechargeable at any time.

· Magnetic (Batteryless) Flashlights

The product Magnetic (Batteryless) Flashlight is the newest technology in the industry. One just has to shake the torch for 60 seconds and you will get up to 2 hours of light from this appliance. These flashlights have three super bright LEDs which emit bluish white light that helps us in viewing clearly in the dark.

There is a high field strength magnet inside these flashlights, that slides back and forth inside a coil of copper wire, as we shake it to generate electric power. This power then gets stored in a small capacitor. The stored energy in the capacitor then powers the high brightness white-light LEDs.

It is prudent to turn the switch off at the time of shaking the flashlights for charging. If the switch is not turned off then pulse with the power spikes coming from the coil can be seen in the LEDs. The operating switch of these no battery flashlights is durable and intrinsically safe. These torches lights are very light in weight and are completely designed to be waterproof. They are also fully portable.

· Dynamo type No Battery Flashlights

Another type of (without batteries) flashlights is the dynamo type. These were the oldest technology among the battery-less flashlights. These types of torches have little fold-out cranks and we need to wind on for a while so that we can use the light again. In Dynamo type flashlights, by winding the cranks for a few minutes, a sector gear starts to move causing a tiny pinion gear to spin which drives a PM dynamo.

The dynamo generates electrical energy which is used to light the LEDs in the batteryless flashlights. For years there have been dynamo types flashlights around that the world those work by squeezing a lever handle. Dynamo type battery free flashlights are more reliable than the ordinary battery lights.

· Batteryless Flashlights review

The No Battery flash-lights are mainly used for emergency purpose. These flash-lights sometimes come with built in FM radio. The main advantage of this Batteryless flashlight is that they are absolutely maintenance free. These flashlights can be stored for long periods of time without the worry of leaking batteries. In case of battery powered torches they often have their battery contacts loose & dbecome dysfunctional, but the batteryless flashlights don't go dead as you are miles away from home late at night.
The main disadvantage about these batteryless flashlights is that they are not as bright as most other battery powered ones, but that's a small price to pay as they are infinitely brighter than any other battery powered flashlights who's batteries are drained of energy or their bulbs are broken or burned out.

About the Author

Tyson J Stevenson creates useful articles & reviews on a wide variety of everyday subjects.
Expect to see his name often. View further samples of his work at News2Reviews or at Batteryless Flashlights

Flashlight Guide


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