Advance Auto Parts did mine for a 2008 3 series convertible. E93. They would have replaced the battery but it was on their list of NFW are we allowed to install.
I bought the battery from them. I put it in in their parking lot and Frankie the manager came out and registered it with their battery/charging system machine.
Battery was expensive as most are these days but the old one was factory from 2008 - 15 years.
BMW battery lasts 15 years