Most car manufacturers, as well as BMW, work with an open system, i.e. the independent aftermarket can install a suitable replacement battery without having to reprogram the vehicle electronics. Data such as the BEM code, serial number and nominal capacity of the new original replacement battery are entered.
How do you code a car battery?
https://www.youtube.com/watch?v=BmyY5k0k0Mc
Do car batteries have serial numbers?
The 1st two digits of the serial number are letters with the remaining 10 digits being numbers. The date code is on a label located on the back side of the battery. The code is one letter, followed by one number. The number is the last digit of the year of production.
What happens if you don't code a car battery?
If you don't register it with the car, it causes the car to charge it too much or too little. Older batteries get more charge sent to it than newer ones, so putting a new battery in will cause the car to overcharge it, which prematurely kills your battery.