Adding a second Battery

[Tink]

Has anyone added a second battery to their 06 or newer Range Rover? ...just trying to avoid any pitfalls anyone else may have already encountered. Thanks for any help

[fire1427]

Battery Isolator is needed to keep the batteries seperated this also charges the primary (starting) battery first , then sends additional power to the secondary auxillary battery ... You can find the stinger brand ones for like $20 on ebay... I'm assuming you want a second battery mounted in the rear if so then summit racing has a battery relocation kit for $50 it includes wiring and a battery box ... Since this is inside the passenger compartment I'd suggest only using a gel cell (optima .stinger or Odessey type battery) incase of rollover the battery acid doesn't spill out ...
I also like to fuse or breaker both ends of the wire to alternator rated output , it's a safety incase you get a short on the wiring and prevent alternator damage or prevents a fire

[Disco Mike]

Tink,
Just curious, why are you wanting a second battery, are you running a winch or just want some additional reserve?
Mike