I've been getting by with a large variety of very cheap, very effective LED headlights that are usable with 12-80V DC supply voltage. I like that they work with whichever battery I have and that they are cheap and bright. I don't like that the choice of beam pattern seems to be between a focused, flashlight-like round beam with a hot spot, or an unfocused wash of light. Neither one does a great job of illuminating the lane surface, but they're easy to dazzle other road users with.
Does anybody know of a headlight with a beam that conforms to some vehicular standard (like US DOT or German StVZO), but which will run directly on 48V? Ideally something small and lightweight like a normal bicycle light rather than big and heavy like an automotive sealed beam lamp.
Does anybody know of a headlight with a beam that conforms to some vehicular standard (like US DOT or German StVZO), but which will run directly on 48V? Ideally something small and lightweight like a normal bicycle light rather than big and heavy like an automotive sealed beam lamp.