Since my rechargeable light has become unreliable, and I don't really want to install the old generator light I used to run in the flatlands 20 years ago, I'm going to try a new approach.
The other night I noticed that my newer Planet Bike Beamer 3 puts out a pretty good beam. Nothing will overcome oncoming car headlights except something expensive and heavy. The LED lights burn brightly so I can be seen. The only question is whether I will be able to see well enough to ride efficiently. I did not feel like I was groping the other night, with just the new spot 3 and the old flood 3, but it was a quiet country road with few cars to blind me.
I added a Beamer 5 to the lineup today. I hope it will stab just a bit further than the 3, giving me a staged light patch. With the 5, the new 3 and the old 3, I should have adequate coverage. The lights use AA batteries, which means spares are easy to find and compact to carry. I can put one or more of the lights on flashing mode to attract more attention if I don't need them for road illumination right then, such as in the dusk.
We'll see how it goes. I don't know how intrepid I feel about the whole haul in the darkness anyway, but some new path construction has given more options for dropping a car partway.