I've been coping quite happily with a cheap single 18650-cell flashlight strapped to my helmet for a couple of years now. Its beginning to lose a bit of performance, and I'm fedup with it catching on overhanging branches etc as its sticks up off the top of my helmet. So i want to replace it.
Ideally, I wanted a light unit to be attached to the front of my helmet, above the peak, and a small battery pack on the back. I don't want to have to have a cable from my helmet to my bag/pocket for the battery, so it limits me really to a single or double 18560 cell arrangment.
What's out there?
At the moment I've a trout-upgraded hope V2 I run on my bars. That sort of physically fist the description (although I've not checked out how it mounts to the helmet), in which case I'd need a new bar-mount light.