I have replaced my original BMW Battery with the aftermarket one, 100amp, which we import ourselves from South Korea, and never had a problem since, even in the freezing temps, starts no problem, when car not running i have all the electronics on and still no problem, the X acts like i never had this problem before.

I used to have dead battery at least 3-4 times a month, but now thank god this issue is gone!

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---2008 X5 With All Factory Options

---2002 Black S 500 Designo Edition