Fenix BC05R V2 Rechargeable Bike Taillight 15 Lumens USB-C Safety Light

The Fenix BC05R V2.0 is a compact, rechargeable bike taillight engineered for cyclist visibility and safety. Delivering 15 lumens of red signaling light with a 50-meter alerting distance, it features six intelligent modes including variable flash speeds and brightness levels to match any riding condition. The built-in 400mAh Li-polymer battery provides up to 120 hours of runtime on a single charge—ideal for daily commuters. Fast USB Type-C charging ensures quick recharge cycles. Weighing just 28 grams, this ultra-slim light attaches via included body clip to helmet, pocket, or backpack. Its IP66 rain and dustproof rating withstands harsh weather, while the single-button interface enables effortless operation. Battery level indicator keeps you informed of remaining power. Fenix's Limited Lifetime Warranty backs your investment in reliable cycling safety.

Fenix BC05R V2 - 15-Lumen USB-C Rechargeable Bike Taillight

The Fenix BC05R V2 is a compact rechargeable bike taillight that does the one thing a tail light must do: make you visible from behind without weighing down your bike or pack. It puts out 15 lumens of red light across a 180-degree viewing angle, with a 50-metre alerting distance.

A built-in 400 mAh Li-polymer battery delivers up to 120 hours of runtime and recharges quickly over USB-C. The included body clip lets it double as a backpack or chest light, and the bicycle mounting strap secures it to seat posts, bags or frames. IP66 sealing and a single-button interface keep it practical in real riding weather.

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LED, Output and Runtime - What the BC05R V2 Delivers

Five red LEDs arranged behind a diffusing lens give the BC05R V2 its wide-angle alert pattern. The electronics are simple and efficient:

• 15 lumens maximum red output with a 164 ft (50 m) alerting distance
• 180-degree lighting angle for side and rear visibility
• Two brightness levels plus slow flash and fast flash modes
• Built-in 400 mAh Li-polymer battery, USB-C rechargeable
• Up to 120 hours runtime on a single charge
• Single switch for fast, glove-friendly mode changes
• Battery level indicator shows remaining charge at a glance
• IP66-rated rain and dust protection

Fenix BC05R V2 - Core Selling Points

• 15-lumen red output visible up to 50 metres behind you
• 180-degree wide-angle alert pattern covers rear and side approaches
• USB-C rechargeable 400 mAh battery with up to 120 hours runtime
• Weighs just 0.99 oz (28 g) - barely noticeable on the bike
• Includes body clip and bicycle strap for seat post, bag or backpack mounting
• Two steady levels plus slow and fast flash for different riding conditions
• Battery level indicator takes the guesswork out of charging
• IP66 sealed against rain, road spray and dust

Where the Fenix BC05R V2 Performs

• Daily commuting: the wide-angle red beam makes you visible to cars approaching from behind or from the side at intersections.
• Road and gravel riding: the 50-metre alerting distance gives drivers time to react on faster roads.
• Group rides: the lower steady mode avoids blinding the rider behind you while still keeping you legal and visible.
• Backpack or chest mounting: the body clip turns it into a runner's or hiker's visibility light when off the bike.
• Emergency visibility: fast flash mode draws attention if you are stopped on the roadside or in a low-visibility area.

Fenix BC05R V2 - FAQ

How bright is the BC05R V2?
It produces 15 lumens of red light. That is intentionally modest for a taillight; the goal is wide-angle visibility, not lighting up the road behind you.

How do I charge it?
Use the USB-C port on the back of the light. A full charge restores up to 120 hours of runtime on the lowest setting.

Will it fit my seat post?
The included silicone strap mounts to round seat posts, seat stays and bag loops. The body clip also lets it attach to clothing or packs.

What do the flash modes do?
Slow flash is ideal for group rides; fast flash is best for roadside visibility or high-traffic commuting where you want maximum attention.

Can it get wet?
Yes - it carries an IP66 rating, so heavy rain and road spray will not hurt it. Just keep the USB-C cover sealed.

Glossary of Terms

USB-C Charging
A reversible charging connector that restores the built-in battery faster than older micro-USB ports and uses the same cable as most modern phones.

180-Degree Visibility
A wide alert pattern that makes the light visible from the rear and from the sides, improving safety at intersections and driveways.

IP66
Dust-tight and protected against powerful water jets. The BC05R V2 handles heavy rain and road spray.

Li-polymer Battery
A thin, lightweight rechargeable lithium-polymer cell. The 400 mAh cell keeps the V2 running up to 120 hours.

Body Clip
A spring-steel clip on the light body that lets it attach to pockets, straps, packs or clothing for off-bike use.

Alerting Distance
The distance at which the light is bright enough to warn approaching traffic. The BC05R V2 is rated at 50 metres.

Who Should Buy the Fenix BC05R V2 - and Who Should Skip It

Who should buy it

• Commuters who want a lightweight USB-C tail light with long runtime
• Riders who need 180-degree side visibility, not just a rear spot
• Cyclists who want both seat post and backpack mounting options
• Anyone replacing disposable-cell tail lights with a rechargeable unit

Who should skip it

• Riders who want a bright rear flood light for group illumination
• Anyone needing a brake-light or accelerometer-triggered flash mode
• Users with aero seat posts that may not fit the included strap
• People who prefer a replaceable battery; the cell is sealed inside

Care & Maintenance

1. Recharge the light every few weeks when stored; lithium cells age faster when left flat.
2. Keep the USB-C cover pressed firmly into place after charging to maintain the IP66 seal.
3. Wipe the red lens after wet rides; water spots reduce visibility.
4. Do not overtighten the strap; silicone can stretch if pulled too hard.
5. Store the light dry; prolonged damp storage can corrode the steel clip.
6. Charge with a standard 1 A or higher USB-C adapter for normal charge times.
7. Inspect the clip spring periodically; a loose clip can fall off on rough rides.
8. Avoid leaving the light in direct dashboard sun for long periods - heat ages the Li-polymer cell.