With the development of LED technology and improved battery efficiency, bike flashlights are smaller and brighter than ever before. The price of the same size bike flashlight on the market may range from $50 to $200. What is the difference between them? The difference lies in the LED light on top of the bike flashlight, the battery and the circuit technology. In addition, rechargeable batteries add to the cost. Anti-drop height, waterproof rating, heat dissipation efficiency and multi-position switch function, these additional features will also increase the production cost. Here's how to better choose a bike flashlight.

1.Clarify the selection of bicycle flashlight elements:

• Output brightness
• Battery type and range
• Flashlight size and weight
• If you plan to buy a bicycle flashlight, have you considered these?
• How does the switch of this bicycle flashlight operate?
• Will its switch turn on unintentionally while riding?
• If you are planning to use this bicycle outdoor flashlight in a cold environment, can you easily twist to turn on the light with gloves on?
• Is the appearance smooth enough, not rough?
• What is the feeling when you put it in your hand?
• need a tool to assist when changing the battery?

2. Bicycle flashlight characteristics
(1) Brightness:

The unit of measurement of brightness is "lumens". It can measure the highest output brightness when the battery is fully charged. It can also show the different gear settings of the bike flashlight. This is a very important measure of a bicycle flashlight. The brightness output of a bicycle flashlight can range from 20 lumens for reading to 3500 lumens for burning.

(2) Range distance:

The unit of measurement for the range of light is "meters". It is to measure the distance of light exposure. Range brightness and distance to the safety of outdoor travel to consider. Range will change with the output brightness of different gears.

(3) Range:

The unit is "hours". It is a measure of the time it takes for the output brightness of a fully charged bike flashlight to drop to only 10% or less. The output brightness of a bike flashlight may gradually decrease over time, or it may last a long time with the same brightness, and then suddenly drop. The range of each bicycle flashlight is usually fixed. A graph of the range of a bike flashlight can explain well how the brightness changes over time.

(4) Anti-fall height:

The unit is "meters". Bicycle outdoor flashlights are generally tested six times by dropping them from a fixed distance to the ground. This test is to ensure that the bicycle flashlight can still work after an accidental fall. However, this test does not include whether the flashlight can continue to work after being run over by a heavy object.

(5) Waterproof rating:

The waterproof rating is measured in IPX system. For the use of outdoor flashlights in the rain or in the water in this case, the waterproof rating is very important. There are 3 common waterproof ratings.

IPX4 - protects the bike flashlight from water splashing in any direction without harmful effects.

IPX7 - protects the bike flashlight from being placed underwater for 30 minutes at a depth of 1m without water immersion.

IPX8 - Protects the bicycle flashlight underwater at a depth of 2m for more than 4h.

(6) Size and weight:

This largely depends on personal preference. Bigger and heavier bike flashlights are not necessarily the brightest, but they will likely last longer due to the larger battery capacity.