Fenix BC21R V3.0 High-Performance Bicycle Light

Reliable light with reliable mount

Solid mounting system that doesn't rely on silicon bands is a very big plus here. No rattling, no play, no slop, just solid spring-assisted retention. You would think swappable batteries would be easy to find for bicycle lights, but no, so the fact that this works with my other 18650 devices is fantastic, plus the light has its own USB charge port anyway so I can either swap a battery or use a power bank depending on my kit at the time. Anyway, quite bright enough - whether you're on a pitch-black road in the sticks or in the reliable streetlight illumination of montreal island. The battery indicator LED tends to go red faster than you'd think but I think it's just a bit overeager. I don't realistically see anyone running out unless they insist on going all through the night. I had enough charge to run on high for a 3h after-dark ride, no stress. If I didn't have 18650 batteries already I might have gone with the BC26R instead, which uses higher capacity batteries for longer runtime and seems more available.