Well I have my new alt. Reading 14.1 to 14.4 at batt. So I am certain its good. I replaced the alt due to charging issues. I am certain it was heading south. But now I am wondering if its the batt.

Is the battery serviceable? Its a newer looking MB batt. Had quarter sized plastic screw caps on top. Battery does not say unserviceable like most sealed types.

Thoughts? Hate to get a whole new batt. Oh, in the morning I am reading just under 13v at batt. Nothing is left on overnight. Crankovers getting worse.

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car