Smart Tech
What are Bike Lights?
Front and rear lights that help you see, and be seen.
Simplified schematic — not to scale.
In plain English
Lights are a legal requirement after dark in the UK, and range from simple battery units to rechargeable, high-output lights with multiple flash modes.
A simple analogy
“Think of the front light as your headlight and the rear as your brake light — both jobs a car does automatically, that you need to switch on yourself.”
How it works
An LED draws power from a battery or rechargeable cell, with a lens or reflector shaping the beam to either light the road ahead or catch a driver's eye from behind.
Signs of trouble
- ⚠Dimming output even fully charged
- ⚠Won't hold charge as long as it used to
- ⚠Flickering on rough roads, suggesting a loose connection
Rough UK cost
£10 – £120 a pair
Always get a written quote. Prices vary by bike, region and parts brand.
Heads up: Bikeautonomy is for general guidance only. If your bike is behaving oddly or you're not confident, get it looked at by a qualified bike mechanic.