Originally Posted by
Unknown Cyclist
If you don't mind a less efficient option you can simply buy a bridge rectifier
I'll have to try that for my commuter. I'm getting a Sturmey Archer 3-speed/dynohub combo, and thus my dyno will be in the back. This means a taillight is a natural feature, since it will be right there. Then I can run a wire up to a single headlight LED. I suspect that will be plenty for my commute. Right now, I also use a helmet light. Or maybe I should just use 4 LEDs as my rectifier, but then my housings will not be as nice looking.
The triple XPE is going on the rando bike. Maybe I should just go the simple route there too. Not sure how much time I will spend going slow enough to worry about the low speed output.