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 Fuel Tank Cap Loose or Missing October 25, 2019 Land Rover Key Fob Battery & Key Shell Change October 25, 2019 LR3 PCV Valve Location and Replacement October 25, 2019