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 Replacing LR3 Spark Plugs with Tool List and Torque Specs October 23, 2019 Fuel Tank Cap Loose or Missing October 25, 2019 How to Replace the Oil Filler Neck and Filler Seal on an LR3 October 23, 2019