ever since i got the car...2008...on every battery that has ever been installed. i have battery drain problems if i leave the door open and listen to the radio (while cleaning or detailing) in 10-15 minutes battery is dead and won't crank. has been a real frustration over the years.
i drive it infrequently and way too often would want to go for a drive and no crank. so i leave it on a tender all of the time now...just don't trust it.
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2007 BMW Z4M Coupe | Sapphire Black | 19" ZCP Wheels | Michelin PSS - 245/285 | Carbon Leather
Black Corners | UUC Short Shifter | ///M Racing Pedals | OE Strut Brace | LED Accents | PEMP Android
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