Originally Posted by
Mr IGH
Aren't you running a dyno? Who uses batteries these days?
I own 4 bikes - my summer commuter and winter bike both have dynamos, my mountain bike does not (though mountain biking is one place where a shaped beam would not work), and my high end road bike does not as well.
There are advantages and disadvantages to battery vs dynamo, but as I said - since this thread is actually about a battery light, perhaps we can not do that debate here. Feel free to create another thread on the topic if you want, though as I said elsewhere I think right now it's like arguing road bike vs mountain bike - there's no "winner", it depends on your situation which one is better.