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      11-09-2012, 05:42 PM   #27

Amri215's Avatar
Drives: 2012 Alpine White M3
Join Date: Nov 2012
Location: New Jersey

Posts: 161
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Originally Posted by af908 View Post
Can someone explain to me what happens if the battery is NOT registered?

I talked to a couple guys i know at the BMW dealership, including the shop Foreman, and they all said registration is not necessary. They did however, say that it only becomes an issue when changing the specs on the battery, where the car has to be recoded to charge the new battery.
Registration is absolutely necessary..It configures the alternator of the car to charge the battery optimally. if you dont register the battery it could shorten the battery's life