OP - You're lookin' to buy a new headlamp. You want to cast a long beam for fast riding. You ride bike paths on your e-bike.
For the love of Vélocio, would ya get a light with some kind of beam cut off?
Hey, if you're on an e-bike, why don't you run the light off the bike's battery?
https://www.bumm.de/en/products/e-bi...r60ts7-01.html
No? Okay, get a Fenix BC21R and stuff a 3400mAh Panasonic 18650 in it. See, the thing with the BC21R is that it uses standard, off the shelf, easily replaceable batteries. Carry a spare or two and your run time is dusk 'til dawn.