Sofirn BS01 - viel Licht für wenig Geld? + Vergleich mit Lumintop B01

The reviewer uses the Lumintop B01 as the primary comparison product for the Sofirn BS01 throughout the video. They state it is not a perfect light, with deficits in light distribution, but is very affordable, produces a lot of light, and has a killer feature: an easily swappable standard 21700 lithium-ion battery. The reviewer purchased it themselves. They compare it extensively on features like battery swap mechanism, user interface, charging, mount, light output (lumen and lux), light color, beam pattern, and runtime performance. The Lumintop generally holds brightness more consistently over time and has a neutral white light, but its mount and newer version's user interface are criticized. The reviewer concludes the two lights are very similar in beam characteristics, with the choice coming down to preferred light color and specific feature preferences.

The reviewer provides a detailed analysis of the Sofirn BS01 bicycle light, comparing it primarily to the Lumintop B01 and the Busch & Müller Core 2. They state it is a budget light (around €30) with a key feature being an easily replaceable standard 21700 lithium-ion battery, though access requires removing four small screws. It uses a USB-C charging port, has a Garmin-style mount, and offers four brightness levels including a boost mode. The reviewer notes the light output is not constant, dropping significantly over the battery's runtime, which they consider a major drawback. The beam pattern lacks a sharp cutoff and places the brightest point too low for optimal distance vision when aimed to be glare-free. The light is cool white (~6500K). While it produces a lot of light, especially in the near and mid-field, its distance illumination is weaker than STVZO-approved lights. The reviewer concludes it could be suitable for those on a budget who value a replaceable battery and can compromise on distance vision.