My X5 has the Durcelll SLI49AGM. It went through a lot of abuse while chasing down a parasitic amp draw. The GMIII would take it down enough in two days to keep it from starting. I used a jump pack and overnight charging until it was fixed. Local price was $241.14 at Battery Plus three years ago. It carries a four year warranty. I would buy it again.

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'06 X5 3.0i - bought @143,123 miles (12/26/20)