There are many battery names in the market but if you want to continue with regular battery (Lead acid) you can go Bosch (go to pepboy online, pick the right Bosch for your X5 and call local pepboys, giving them stock number then they will order for you. You can go with Duralast from Autozone or Autocraft from Advance Auto Parts. These lead acid batteries have average longevity for 4-5 years.

If you want to pay a little more $$$ with longer life battery, I recommend you to go with AGM (Absorption Glass Mat) batteries. These batteries have average longevity 7-8 years and some up to 9-10 years depend on how you drive, night time garage and electronic consumption. I just replaced my battery couple days ago with AGM Battery for $194.00.

When replacing battery, remember disconnect Negative (-) first then Positive (+). When you install new battery, connect Positive (+) first then connect Negative (-).

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BMW X5 2004 - 2005 MB E320
BMW 1999 528i/ 1998 Nissan PathFinder (sold)