Stromer bikes come equipped with a horn from the factory, not a bell, which is a topic of controversy. Some find it too loud, others too quiet, and still others dislike its sound. In older Stromer models, it was also affected by spray from the front wheel and sometimes failed to function.
The classic bicycle bell is a good alternative. There is a huge range on offer - but with huge differences in quality.
The velojournal.ch tested 18 bells and also provided an audio sample.
A few examples of good bells:
KNOG Oi "Luxe"
KNOG Oi "Classic"
SPURCYCLE "Bell Raw"
NEVER2FAR "Bar End Bell Road & Gravel"
This bell fits into the end of the handlebars of the ST7, for example, as standard mounting is hardly possible due to the thickness of the handlebars.
BBB "Loud & Clear Deluxe BBB 15" (cheap and good!)
Skoda DUOBELL
Skoda, the car manufacturer, and a bicycle bell? At first glance, that seems contradictory. A look into Skoda's history clarifies things. It all began as a bicycle manufacturer in 1895 under the name Laurin & Klement in Mladá Boleslav, Bohemia.
The DuoBell holds a special place among bicycle bells. It's the first to be able to outsmart the digital world with an analog solution. Specifically, it addresses the problem that today many people are out and about with noise-cancelling headphones or earbuds, and often hear conventional bicycle bells late or not at all.