Bicycle Battery LED Brake Light FISCHER Model 50641 with 50 LEDs, battery-powered rear safety light

FISCHER Bicycle Battery LED Brake Light Model 50641 is a compact rear safety light designed to increase visibility for cyclists in low-light and traffic situations. The unit features 50 LEDs arranged to provide a broad, bright rear signal and is powered by replaceable batteries, making it simple to maintain during daily use. It mounts to the seat post or rear rack and provides a clear brake-like indication and steady rear illumination to help other road users notice the bicycle.

Advantages

The light delivers a bright, wide rear signal through 50 high-efficiency LEDs while remaining lightweight and easy to install. Battery power allows quick replacement without the need for charging infrastructure, and the mounting design is compatible with common seat post and rack fittings. Operation is straightforward with an on/off control for steady illumination and brake indication, supporting safer riding in dusk, dawn, and urban traffic.

Suitable for

• Commuting in urban and suburban environments
• Recreational rides at dusk or dawn
• Use on bicycles without integrated lighting systems
• Short trips where easy battery replacement is preferred

Key specifications

• Light source: 50 LEDs for wide-angle rear visibility
• Power supply: replaceable batteries (battery type not specified)
• Mounting options: seat post and rear rack compatible mounting bracket
• Operation: manual on/off control with brake-like indication capability
• Body: compact, lightweight housing suitable for bicycle rear mounting

How to use

Attach the light securely to the bicycle seat post or rear rack using the supplied mounting bracket, ensuring the unit faces directly to the rear and is not obscured by bags or clothing. Insert fresh batteries according to the polarity markings and close the battery compartment. Turn the unit on using the on/off control before starting your ride; switch it off when not in use to conserve battery life. Check the light function regularly and replace batteries promptly when brightness diminishes.

Recommendations

Inspect mounting tightness and battery condition before each ride. For best visibility, position the light at a clear rear-facing height and avoid placing reflectors or panniers that block the beam. Carry spare batteries for longer trips and replace them in dry conditions to prevent moisture ingress when the battery compartment is opened.