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Old 11-26-2012, 01:36 PM   #9 (permalink)
ever_green
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Join Date: May 2011
Location: Toronto
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gueff - '19 Mercedes Benz A250 4MATIC AMG
90 day: 30.55 mpg (US)
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my first check with 11.8v was with key in acc. my second check after driving the car with no acc on was 12.7v while car was off with no key in ignition. i just chwck the voltage after it being off for 24hrs in freezing temps and voltage is 12.4-12.5v car off.
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