It might seem expensive, but with the lifetime and cost of new batteries, it might be worth it.
I spent 6,000 on my Mustang and the battery was dead after 2 years, and had lost a lot of power after 1 year. That put the cost at 250 kr.month. Of course, I could buy a new battery for 2,000 and get another 2 years out of it.
Still, paying 361 /month and always having a strong battery and a new bike doesn't seem too bad.
https://ipaper.ipapercms.dk/Fribikeshop ... og/?page=4