A single-speed bicycle has only one comfortable cadence, which translates more or less to a single cruising speed. This makes it rather unpleasant to keep up with another cyclist.
I've had a single speed for nine years. The main problem is the gear ratio. Because you're limited to a single ratio, the bike will struggle on climbs or be very limited in terms of speed. Mine, for example, is quite capable on climbs (nothing like a mid-drive with a derailleur), but it's...
It works; my daughter completed all her university studies with her mother's old 10-speed. Now it's cluttering up her garage, she wanted to get rid of it, but nobody wants it!
In Quebec, we don't have a problem with that; they prefer to steal luxury cars from the age of 14! ;)
When you leave your bicycle, adjust your seat to the highest setting; they'll think twice before stealing a giant's bike.
This reminds me of a joke:
I bought a bottle of rum and put it in my bike basket.
Just as I was about to leave, I thought for a moment. If I fall off my bike, the bottle might break.
To avoid that, I drank all the rum before leaving the store.
This turned out to be a very good decision...
PCeBiker I agree, the most important thing is that all cells must be the same from the start. If there is a 48v BMS that manages each cell separately, that's new to me, let's say 52, 65 wires maybe more. Does it exist?