LR3, Discovery 3 Battery Location Post category:Land Rover / LR3 / DIscovery 3 The location of the battery in a LR3 or Disco 3 is in the engine compartment. It is under a cover panel on the passenger side. The cover panel is held down by 3 clips, these clips a very brittle and break easily. You Might Also Like Discovery Sport Cabin Air Filter Replacement & Location October 25, 2019 Unlock a Land Rover with Dead Battery or Broken Key Fob October 25, 2019 How to Replace the Oil Filler Neck and Filler Seal on an LR3 October 23, 2019