Despite the popularity of headlights, flashlights are still one of the most common products in life. This blog summarizes some factors you should consider before buying a flashlight. Reading this article can hopefully give you some inspiration.

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Light output

Measured with lumens. This is a measure of the intensity of light emitted by the flashlight using a new battery at the highest brightness setting. You can check the instruction manual of the flashlight to understand the output. This will affect the use of flashlights, especially camping. This is a good comparison tool, but it can’t stand foe brightness totally. The intensity, distance and type of the beam will affect the effect of the light in various applications. The light output ranges from a moderate 20 lumens (very suitable for reading books) to a scorching 3500 lumens.

Battery type

There are three types of flashlight batteries: disposable batteries (AAA or AA batteries), rechargeable batteries (rechargeable lithium-ion batteries) and rechargeable batteries (flashlights with manual cranks or manual charging by solar panels). Get a high-power flashlight with a battery that meets your needs. When packing an emergency kit, it is best to use a flashlight with a renewable battery. If you want to avoid waste, use rechargeable batteries. If you are outdoors, a flashlight with a disposable battery is sufficient.

Run hours

Measured with hours. The running time of the flashlight will also affect its practicality. Generally speaking, if a standard flashlight is used continuously for 15 minutes, the execution time of its light output will be reduced by 10%. The light output can be gradually reduced or suddenly reduced over time without change. Run time is usually provided for each lighting setting.

Size and weight

This is mainly a personal preference. Large and heavy devices are not always bright, but because of the large battery capacity, they can run longer.

Material and shape

Most flashlight bodies are made of plastic or aluminum alloy. Some flashlight heads are made of stainless steel to improve impact resistance. Not all aluminum bodies are the same. The lighter style is lighter, and the thicker style is stronger.

Cylinders are the most common shape, but the contours of some models can resist rotation because they tend to rotate when placed on a surface. In addition, the surface of the main body adopts a knurled pattern to suppress grip and sliding.

Beam type

The type of light emitted by the flashlight is determined by the lens reflector around the bulb. The light beam can be classified 3 types: floodlight or fixed (with a single beam width), focus (with a single beam focused into a spotlight) and adjustable (beam width can be switched from floodlight to focus as required). The most common type of flashlight beam is the flood beam.