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Purchase Guidance: What to Consider Before Buying Bicycle Lights

Sep. 11, 2021

Do you spend most of your time cycling in the mornings and evenings? It's important to make sure you choose the right bike lights, and set them up correctly - especially in the darker winter months. Having the right lighting settings can make riding in dark or low light conditions safer! Here are some important tips from Brightenlux to help you achieve this.

USB Bike Light Rechargeable BY6002


The weight of the light will vary depending on its brightness and battery size, with 'visible' lights weighing as little as 15 grams and 'visible' lights weighing up to 150 grams. Expect the front light to be a little heavier than the rear light. Check the different mounting options to make sure it's compatible with your bike.


Most bicycle-specific lights can be easily mounted to most handlebars and seatposts, but for those with pneumatic bars or pneumatic seatposts, light installation becomes more difficult.

Most lights are either fixed in place with Velcro, which is a screw that tightens the bracket around the handlebar or seatpost, or mounted using a stretchable rubber strap. As mentioned earlier, if you have a standard round bar to attach it to there will be no problems, but non-round surfaces may present a problem as there may be problems with larger than normal round diameters, for example double wrapped handlebars. It is therefore important to ensure that each light and its mount is compatible with your bike.

Lamp types

LEDs are primarily responsible for modern lights, replacing halogen bulbs. LEDs are far more efficient than halogen lights, using less energy to produce the same amount of light. High power HID bulbs were briefly seen in high end bike lights but, much like luxury cars, have since been phased out due to the development of LED technology.


Most lights can be charged via USB or require batteries. Most modern lights can be USB charged using lithium ion or similar batteries, saving you money by not having to buy batteries and keeping them charged is simple and easy. For lights that require batteries, it is worth ensuring they are easily available from supermarkets or service stations.

Some high powered lights require a battery pack to be carried and inserted into the light in order to work. If you need such a light, make sure you have the ability to mount both items on your bike, or mount one and carry the other. After you have mounted the light, GPS computer and bell to the handlebars, there may be little room left to mount anything else.

Put simply, the greater the capacity requirements of the battery (in terms of overall brightness and runtime), the greater the size and weight.


Runtime or burn time indicates the duration of a light from fully charged to dead.

If you need all the light you can get, it is worth looking at how the lights handle their runtime. bbb refers to a concept called "constant output" when describing their runtime. Other lights will start at a set amount of lumens and then gradually drop off linearly as the battery runs down.

We hope this guide has been helpful and has provided some valuable information. You can click here to get the lights!

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