Hello, do I have to write to the Galaxus after-sales service to obtain this famous list of manufacturing dates?

I ask because I noticed that bought in March 2020, my battery would have been manufactured in September 2019 and this is the first time I have already had a problem with a battery that is, barely 3 years old! So I am rather surprised!

hello, from my knowledge it's usually 5 years later they last longer but won't be as good as they were at the start, if you have a recent vehicle it's important to replace the battery in time because the electronics are sensitive and if it's faulty it can cost you a lot of money. For the rest of the questions I am not so competent, I suggest you do your research on Google.