If you think keeping your battery charged is not much work, you might get a fresh look at it when you no longer have to do it. It's heavenly. So much that CAN go wrong just goes away.

Battery powered lights as a supplement are great but if you have dynamo lights and everything is working, then you can use both battery and dynamo powered lights. I often use two battery tail lights as well as my dynamo headlight and tail light.

Also, when you start using a light designed to be a headlight, you start appreciating where all those extra lumens were being wasted. My little headlight doesn't emit much energy, but it puts plenty of light where I need it. I feel confident at 25 mph on a dark road. That's pretty fast. What more could I want?