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Old 04-13-2019, 09:23 PM
namelessman namelessman is offline
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Originally Posted by RRRize View Post
I don't think you can effectively recharge a battery whose cells are diminished and gradually diminishing. From my research, I've found that the AGM battery life in the F30 line is 5 to 6 years. If you've managed to have it going 7 years, I'd say count your blessings! If at this point she's dying, she has served you well. Get a new battery and bury old faithful with love and dignity.
My old E39 factory battery lasted almost 9 years and 90k miles!

My current F30 factory battery is 6.5 years and 65k miles, it still goes pretty strong for now.
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