On/Off
Press and hold the switch for 0.5s to turn the light on/off.
Output Selection
With the light switched on, single click the switch to cycle through Low→Med→High→Turbo.
Flash
With the light switched on, double click the switch to enter flash, single click to turn back to general mode.
Battery level Indication
With the light switched off, single click the switch to check the battery status. The battery level indicators will display the battery status for 3 seconds.
- One light on: critical, 0% – 25%
- Two lights on: poor, 26% – 50%
- Three lights on: sufficient, 51% – 85%
- Four lights on: saturated, 86% – 100%
Charging
One standard Micro USB charging cable, which can be used for charging other digital devices, is included.
Operation: With the light switched off, remove the dust cover of the bicycle light to reveal the charging port, and plug the Micro USB end of the USB cable into the light’s charging port, then connect the other end of the USB cable to a USB power adaptor.
Charging Indicator: The indicators near the switch will display charging status. Four indicators will remain constant on when the battery is fully charged.
Note:
- Once charging is completed, be sure to remove the charging cable and replace the dust cover.
- The normal charging time of the built-in battery is 2.5 hours from fully depleted to fully charged with the light off.
- Recharge the light timely when the battery level is critical, for future use.
- Recharge a stored light every three months to maintain optimal battery performance.
- Only Low output can be used while the light is being charged, but charging time will be prolonged.
Intelligent Memory Circuit
The light memorizes the last selected brightness level on General mode. When turned on again the previously used brightness level will be recalled.
Overheat Protection
The light will accumulate a lot of heat when working on Turbo mode. The light will automatically step down a few lumens to reduce the temperature, but turbo mode can be reselected.
Low-voltage Warning
One of the indicators flashes when the battery level is critical. When the voltage level drops below a preset level, the bicycle light is programmed to step down to a lower brightness level until Low output is reached. To ensure normal use, the bicycle light will work until the battery runs out.
Mounting Instruction
Bicycle Light and bicycle mount
- Unscrew the screw of the bike mount. Fix the bike mount in the desired position on the bike handlebar and fasten the screw.
- Loosen the fine adjustment screw of the handlebar mount before clamping the mount to the bar by securely tightening the set screw.
- Slide the light into the mount until a distinct “click” is heard.
Note:
- Adjust the direction of the light before testing the power and functions of the bicycle light.
- Use the shims provided according to the diameter of the bicycle’s handlebars:
- Thick + thin shims together: diameter 22-28mm;
- Thin only: diameter 28-32mm);
- With no shim (whenever applicable): diameter 32-35mm.
Usage and Maintenance
- Disassembling the sealed head can cause damage to the light and will void the warranty.
- The light will accumulate a lot of heat when working on Turbo mode. Do not touch the heat dissipation fins.
- For secure transportation, the bicycle light is not fully charged before delivery. Recharge it before first use.
- Store a fully charged light in a dry, ventilated place if it will not be used for a long time. Recharge a stored light before reuse.
Warning
This light is a high-intensity lighting device capable of causing eye damage to the user or others. Avoid shining the light directly into anyone’s eyes.
Elijah Shanks (verified owner) –
I own more than ten Fenix products, and they are all amazing! I use this bike light for biking to college, and it really illuminates my surroundings without blinding oncoming traffic.
Jovito Manrique (verified owner) –
Great bike light.
Bob (verified owner) –
Awesome light. My commuter bike has 25mm road tires on it. This lights up the night so I can clearly see uneven pavement and gravel on the road. Well worth the money.
Allan Kauders (verified owner) –
Excellent design, excellent quality, and exceeds my expectations
Anonymous (verified owner) –
Great quality
Michael R. (verified owner) –
Top quality, easy mounting, bright white light. Bought 2, they adjust sidewsys when mounted, I can now increase the width of my light beam as much as I want. Bought on sale so I can’t complain about the price. HIGHLY recommended !!!
Pathum R. (verified owner) –
Awesome light !!
Joel (verified owner) –
I really love this light, I bought two of them one for me and one for my wife when we do night rides. They really work great and put out plenty of light. The mounting bracket is wonderful and has an ingenious spring clip that makes it easy to take off and on.
Orlando Stuart (verified owner) –
I ride about 100 miles per week. I have found myself riding in total darkness on more than on occasion. This light is bright enough to see and be seen riding on the road. I ride with the flashing light on during the day. Perfect for being seen on busy bike trails (sometimes people focus on the light instead of getting out the way, beware). I would recommend that everyone have a flashing front light on their bike for daytime visibility. This is been a great light so far (about 6 weeks of use). I’ll probably get a couple more.
brent b. (verified owner) –
I own several Fenix flashlights which I love. I’m a little disappointed with the 2 BC25R bike lights I purchased. They are not the same crisp, bright white light like my flashlights. Maybe comparing a bike light to a PD35 Tac and a TK72R is not fair. But I was expecting more from a 600 lumen Fenix light. 600 lumens should be 600 lumens bike light or flashlight.
Eric F. (verified owner) –
A bargain price for such a quality light. Makes low light riding enjoyable and safer.
Ron E. (verified owner) –
To good to talk about.
Kyle (verified owner) –
Fit right on the bike handle. Very sturdy. Slides in and out of a clip so you only have to mount once and is easy to remove for charging or taking with you so shady folks don’t steal it when bike is chained up. Different levels of brightness work well for different light levels.
Always enjoy seeing Fenix products in my mailbox.