I just replaced mine a week ago.

Did it in the auto store parking lot, so I didnt have to mess with the core. Used jumper cables to ensure there was always a 12V connection to prevent loss of any volatile settings. About 15 minutes.

Then registered with Carly.

Cost $209.

No other issues, no seat belt issues, no nothing.

Bosch battery. I assume private label from one of the 2 battery manufacturers in the USA. One of which also makes the BMW battery. Looks pretty similar actually, but I didnt take a picture