replace bmw battery with what? must it be bmw?
I stored my 2000 BMW Z3 all winter and the battery was dead when I went to take it out of storage. A tow truck operator started it and advised me to run it for at least 45 minutes, which I did. I drove it several times throughout the day, but overnight, it died again. My husband thinks we should just go get another battery, but I think it should be from the dealer. This is the second battery I've had in this car and it was replaced by the dealer. Does it matter which brand it is??