Dual Batteries & Accessories
The only thing worse than a warm beer is a car that won’t start… especially when you’re going bush.
A dual battery (also called an ‘auxiliary battery’) can make that camping trip so much more comfortable. It can also keep you out of trouble in so many ways.
Apart from keeping your food from spoiling and your beer cool (pretty important, we know), a good dual battery is helpful:
To preserve your vehicle’s main starting battery
To run a fridge/freezer, camp lighting
To power devices like safety lights, camera and phone chargers, and and in-car entertainment systems when you’re parked.
The starting battery can easily power a few accessories while it’s running: your phone charger, GPS systems, lights, and radios. But you don’t want to risk getting stranded with a dead battery just to keep your lamb chops frozen!
Dual battery and accessories
We supply a range of dual batteries and accessories for a range of cars, according to your budget. These may include:
Dual battery monitors
Dual battery isolator kits
Amp voltage reducer
Dual battery solenoids
Dual battery volt meters
Charger with solar input
Voltage sensitive relays
Speak to our knowledgeable team to make sure you have everything you need to power up all the important devices on your trip.
Battery replacement service (supply and fit)
Same day delivery
24/7 Emergency service: we’ll go to you
Fast service: 60 minute call out guarantee
Best battery prices in Cairns
Free battery testing drive in service
Product and service guarantee
Fast fit batteries, bunch of great guys always willing to lend a helping hand! Went way out of there way to give me and my mate a hand today, helping us replace a battery/ couple of mechanical things at my own cost, and also teaching us a easy tips about cars! Will do whatever it takes to get stuff right! Overall great guys that love a good chat! Will defiantly be going back again and again! Thanks heaps! - Aaron Winn Jones
Tips for a installing a dual battery
Install far away from hot engine components: batteries hate heat
Make sure fasteners and washers are large enough to spread the load across the panel work
Inspect areas for cracks or loosening: don’t buy cheap, poor quality products
Use a strong, fabricated steel tray fitted to your engine bay: one that can withstand strong vibrations
Place the trays into strong sections of your vehicle’s body shell to avoid sheet metal cracking or tearing
Look out for factory installed installations points
When there’s no room in the engine bay for another battery
A dual battery is typically placed in the engine bay. But many engines don’t actually have much room for another battery. A small battery isn’t much use powering a fridge. So it can make sense to have a separate, deep cycle battery. A deep cycle battery is designed to be charged and discharged repeatedly, so it’s perfect for running your extra devices.
There may not be room in the engine for a second battery if you’re not driving an SUV or truck: it may need to be placed in the passenger compartment or boot
Be careful about where you install the battery outside the engine: consider safety hazards such as leaking battery acid, fumes, overcharging, internal faults, and other factors
Use a tough, leak-proof box if it will be placed in the passenger area or boot
Be extra careful placing and wiring up your battery if it’s outside the engine
Feel free to contact us if you need a dual battery installed. Our expert team are always on hand to give you advice. Or we can quickly wire it up for you so you can get going right away.
Highly recommend Fast Fit. I had an issue with my dual battery set up no one else around town could sort out but Rocky and the team went above and beyond to get the issue sorted! Updated my old batteries at the same time for a great price! - Ryan Cooper