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      01-27-2022, 10:36 AM   #9
Thunderguts
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Drives: 2009 128i Sport MT
Join Date: Jul 2018
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Quote:
Originally Posted by Lester View Post
The new battery has to be registered. Otherwise it will not charge properly and behave as you are describing.
I don't believe this is true. The alternator still thinks it's charging an 8-year-old battery, but this won't cause the battery to die once it's charged. It also wouldn't realistically damage the battery permanently unless you left it unregistered for 6+ months or more.
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