what brand battery you guy have

[golde30]

Interstate MTP 91 about the best one on the market outside of the OE Varta from BMW.

i have the same after having 3 optimas die on me.

[SpecM]

-I don't have an optima but they are darn good batteries.

-I have a AutoCraft Titanium (Advance Auto Brand) 800 CCA. Very good as well, 1/2 the price and made by the same company as Optimas (Johnson Controls)