Advances in LED (light-emitting diode) technology and battery efficiency have resulted in flashlights that are smaller, lighter and brighter than they were just a few years ago.
What is the best LED flashlight for you? This article will help you narrow your selection.
Flashlight Performance
- Light output
- Battery type and run time
- Size and weight
Flashlights range from under $20 to over $200, yet they may be the same size. What are the differences? Brightness is the biggest one. A pricier light is more powerful due to the use of advanced bulb, battery and circuitry technology. A rechargeable battery can add to the cost, as can features such as strong impact- and water-resistance, effective heat dissipation and multiple lighting modes. certain though.
Flashlight Performance
Introduced in 2009, ANSI FL1 standards for flashlights ensure that models are tested and rated in the same way. Compliance with these standards is voluntary and the manufacturers do their own testing, but most major brands now include the following performance data on their packaging.
Light Output
Measured in lumens. This is a measure of the intensity of the light coming out of the flashlight, on the highest brightness setting powered by new batteries. It may also be shown for multiple light settings. This is a great comparison tool, but does not tell the whole story about brightness. Beam intensity, distance and type all influence the effectiveness of a light in different applications. Light output can range from a modest 20 lumens (great for reading a book) to a terrain-scorching 3500 lumens.
Beam Distance
Measured in meters. This is how far the light will shine before the brightness diminishes to the equivalent of the light from a full moon. Full moon illumination is considered adequate for safe and careful travel outdoors. This distance will vary with the brightness setting selected.
Run Time
Measured in hours. How long does it take the light output to drop to 10% of the rated output on new batteries, rounded to the nearest quarter hour. Light output may gradually decrease over time, or remain largely constant and then suddenly decrease. Run time is commonly given for each light setting. A Runtime graph, if available, provides the best illustration of the performance of a light over time.
Impact Resistance
Measured in meters. Lights are tested by dropping them 6 times onto concrete at the rated distance. This test is primarily to ensure the light remains functional after occasional accidental drops. It is not a test of resistance for a light being run over, being struck with a heavy object or being used to strike other objects.
Waterproof level
Rated using the IPX system. Water resistance is important if using your light in the rain or around bodies of water. Three ratings are used:
IPX6 and IPX8 waterproof normally used for high end flashlight