Why you need to register new BMW battery
I know there are lots of forums out there that say you don’t have to register new BMW batteries. They’re wrong. You do. The BMWs listed below have an intelligent battery system charging routine. The system tracks power usage and determines how long and when to run the car’s alternator to provide power and recharge the battery. As the battery ages, the system tracks how long it takes to recharge the battery and it stores that information in a look up table.
Replace BMW battery without registering new battery
So if you come along and replace your BMW AGM battery with a new battery, even if it’s exactly the same type, but you don’t register the battery with the IBS, the alternator will continue to charge the new battery the same way it did for the old battery. That will result in two things:
First, the increased charging rate will shorten the life of your new and very expensive AGM battery. Get it? Shorter life dude.
Second, you’ll get worse gas mileage because the alternator will run constantly.
Third, you’ll shorten the life of the drive belt, tensioner and alternator from running it too long.
BMW cars that require new battery registration
2002 and newer 7-Series E65/E66 chassis
2003 and newer 6-Series E63/E64 chassis
2004 and newer 5-Series E60/E61 chassis
2005 and newer X5 E53 chassis *with N62 engine*
2006 and newer 3-Series E90/E91/E92/E93 chassis
2007 and newer X5 E70 chassis
2008 and newer X6 E71 chassis
©, 2019 Rick Muscoplat