BMW M3 Forum (E90 E92) - View Single Post

pbonsalb · 01-31-2013, 08:41 PM

Off at 12.2 is low. 12.6 is a fully charged battery with the car off. Of course with the car on, the alternator output will show up as the voltage, so the 13.8 does not mean much. I would be concerned about the 12.2.

01-31-2013, 08:41 PM	#18
pbonsalb Lieutenant General 7679 Rep 13,761 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Off at 12.2 is low. 12.6 is a fully charged battery with the car off. Of course with the car on, the alternator output will show up as the voltage, so the 13.8 does not mean much. I would be concerned about the 12.2.
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