Originally Posted by
PaulRivers
Some of us run a dynamo light - get a dynamo front hub and it produces electricity as you ride, powering an led front light and tail light. Can't run out of battery ever with it.
Dynamo works only when the wheel is turning, but I think it's important to have the light on even when stopped at red light or when you have a flat etc. and stop in the middle of the road. (Also, I suppose when the bike speed is very slow, the light would be dimmer?)