fit second battery to 2002 gxl prado petrol

Hit me offline and I can send you a photo of where I have mine (as fitted by ARB)

Whoever does the work will move (relocate) the charcoal canister so that the 2nd battery can be installed next to (behind) the existing battery.

Make sure you pick a good auto electrician & that the dual battery system is made by someone reputable - Piranha for example.

Cattle Dog,

There is an alternative to under bonnet. Below is a copy of a post I put in before and have posted many times (sorry to bore those that have read it before).

"I"ve got a great setup. It was installed by Chris at Battery World, Wantirna, Vic. He put a smart solenoid under the bonnet, ran 140 amp cable along the chassis and popped it back into the car attached to an Anderson plug. He then put a 100 amp Lifeline "AGM" battery into a battery box. The battery box has cable running out of it to another Anderson plug so the battery can be removed when not needed or to be used as a mobile power supply. Inside the box he fitted a circuit breaker and two female waeco plugs to the box. He also added a three way cig socket plug with a male Waeco plug on the end to give me three power outlets if needed. The other female plug on the box is used to power my fridge, an Engel which I got him to fit a Waeco plug to as they clip in and stay in. Total cost $700.

AGM batteries have the advantage that they are completely sealed and will accept an extremely high recharge rate, basically whatever you can throw at them. A normal deep cycle will only take about 5 amps, so takes a lot of driving to get them back to full. AGM's of this size are reported to fully charge from near flat in 2-3 hours.

The other big advantage is the portability. Went away two weeks ago to some unpowered cabins up the bush and was able to take the battery into the cabin to power the fridge, lights and laptop to fiddle with my photography.

I can't speak highly enough of the setup."

Cheaper and more versatile than your normal under bonnet setup, however takes up a bit of space in the back.

Works for me.

Good luck with your projects,

Jim.