The battery in the 2016-present BMW 730i is located in the trunk. To access it, open the trunk and remove the floor panel. The battery is located in a compartment on the left side of the trunk.
1994-2001 BMW 730i
The battery in the 1994-2001 BMW 730i is located in the engine bay. To access it, open the hood and remove the plastic cover on the right side. The battery is located on the left side of the engine bay, near the firewall.
2002-2015 BMW 730i
The battery in the 2002-2015 BMW 730i is located in the engine bay. To access it, open the hood and remove the plastic cover on the right side. The battery is located on the right side of the engine bay, near the windshield washer fluid reservoir.
