Gudday mate, yeah ditto on the battery box above, mine is just in front of the fridge, behind the back seat. If you are thinking of doing this make sure you look after the wiring running back from the relay in the engine bay as it will have a battery at either end, will make for some impresive fireworks should the wiring rub through . BTW i have a soft cargo barrier made from seat belt type material, probably not as good as the steel ones but easy to fit / remove and cost $185.Hey guys Im looking for options to mount a 2nd battery in the rear of my wagon. Where and how did you mount it if you have one. Pics would be great if possible. Tryed a search but couldn't find anything useful.