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 Land Rover LR3 Rear Differential Fluid Change October 23, 2019 Land Rover Battery Key Replacement / Range Rover Key Battery March 18, 2021 How to Replace the Oil Filler Neck and Filler Seal on an LR3 October 23, 2019