A dual battery setup is essential for powering 12-volt accessories during camping or four-wheel drive touring. Most dual cab utes come with just one starting battery. You’ll need to add a second for auxiliary purposes to boost capacity and run loads while your vehicle sits idle.
Your cranking battery could die if you run power-hungry accessories while parked without this setup, leaving you stranded. The good news is that you can install your ute’s dual battery setup in several spots. While under-bonnet installation works well if there’s room, putting dual batteries in the ute tray gives you unique benefits we’ll cover in this guide.
Can You Install a Dual Battery in a Ute Tray?
Every ute and owner requires a unique setup and power solution. Whether it be a full RedArc system with the works, or something as simple as the lithium hybrid start battery, we can design it to your needs. The possibilities are endless, and our most popular setups are portable battery boxes for the rear of utes.
The best spot varies with your ute’s model. Some vehicles work better with installations behind rear passenger seats or under the tray, while others suit tub installations better. So, seeking out professional help can enable you to find the perfect spot for your vehicle’s needs.
Why a Dual Battery in Your Ute Tray Makes Sense
A dual battery system works like a power insurance policy for your road trips. Your vehicle’s starting battery delivers short bursts of high power. The secondary deep-cycle battery provides steady energy for longer periods.
You’ll get great advantages by mounting this secondary power source in your ute tray. While mounting batteries in an engine bay is a good space-saving option, to gain maximum capacity out of your dual battery, a rear battery tray setup is the ideal option. There are endless possibilities to capitalise on free space and fit a bigger capacity battery.
The tray-mounted systems give you a unique experience with easy maintenance and connections. Many tradies use this setup to charge their power tools at work. Campers love how they can power fridges, lights, and charge devices without draining the starter battery.
Your tray setup opens up possibilities that under-bonnet installations can’t match. Battery boxes with built-in Anderson plugs, USB outlets, and 12V connections fit perfectly. These battery boxes can become portable power stations at your campsite when removed from the vehicle.
Solar charging adds even more value. Your tray-mounted system can keep power flowing for days when paired with a free-standing solar panel. This setup works great for long off-grid adventures.Choosing the Right Components for Your Ute Dual Battery Setup
Your ute tray’s dual battery setup needs the right components to work well. The perfect mix depends on your power requirements, the type of vehicle you own, and what you can spend.
You’ll need to choose your battery chemistry first. AGM (Absorbent Glass Mat) batteries give you a sealed, maintenance-free option that works great in enclosed spaces, though heat can be an issue. Lithium-ion batteries deliver superior power-to-weight ratio and last longer, but they cost more upfront.
The charging system plays a vital role too. Smart Battery Isolators (SBIs) give you simple protection at affordable prices and disconnect batteries once the engine stops. DC-DC chargers stand at the top of the technology chain, boosting charging efficiency to 100% and often let you add solar input.
Long-distance travellers should opt for DC-DC chargers that work with solar panels. Your choice should match both current needs and future adventures. REDARC’s battery management systems make operation easier with their complete monitoring and control features.
What to Know Before Installing a Tray-Mounted System
Single and dual battery setups differ mainly in their reliability and capability. A standard single battery must handle both starting and accessory power. This creates a serious weakness: your vehicle might not start if accessories drain too much power. A single battery also limits your off-grid power options.
Dual battery systems give travellers and outdoor enthusiasts many advantages. They power your accessories without affecting starting capability and let you run important equipment like fridges and lighting. These setups also make remote adventures more self-sufficient. The boosted reliability makes dual battery systems worth the investment for many 4WD owners and campers.
What to Know Before Installing a Tray-Mounted System
The right preparation makes a big difference at the time you install a tray-mounted dual battery system. We placed emphasis on finding the perfect spot in your ute tray, since heat exposure reduces battery performance. Your auxiliary battery’s lifespan will last longer if you keep it away from heat sources.
Off-road conditions can be tough on batteries. A battery box proves valuable to many owners because it guards against impacts, scratches, and possible terminal shorts. They even come with power outlets built right in, which makes campsite power access easy.
The environmental challenges your system faces need careful thought. Your components can suffer damage from temperature extremes, heavy vibrations on corrugated roads, and exposure to water or mud. Quality equipment that fits your budget becomes a smart investment.
Incorrect wiring creates a high risk of electrical fires, which makes professional installation a safer choice. For a safe, secure installation, contact the team at Access Auto Electrics today.
Installation, Safety and Legal Compliance
Setting up a dual battery in your ute tray needs careful attention to safety and legal rules. Modern plug-and-play designs have made DIY installation more available, but a wrong setup can damage your equipment and create dangerous electrical problems.
Your batteries need proper securing. Australian Standard AS3001.2 states that recreational vehicle batteries must not move more than 25mm under twice their weight. State laws enforce this standard, and it affects lithium batteries the most as they need external installation behind a wall or barrier.
The installation process starts by disconnecting your vehicle’s negative terminal. Safety demands installing fuses within 15cm of power sources to stop electrical fires.
Here’s some good news for 4WD owners: AS3001.2 only applies to vehicles that can connect to mains power. Most four-wheel-drives without this feature don't need to follow these rules.
DIY installation works if you know your way around tools. Professional installation makes more sense because wrong wiring creates high fire risks. A professional setup will meet safety standards and protect your insurance coverage.
Install Your Ute Dual Battery Setup is Safe and Secure with Access Auto Electrics Brisbane
A dual battery system in your ute tray is one of the best power solutions you can get, whether you’re a serious off-roader or weekend camper. Our tests show these tray-mounted systems are not just possible but give you amazing advantages.
Safety comes first when you install the system. You must have proper mounts, right-sized cables, and good fuses to protect your vehicle and everyone inside. Australian standards tell you exactly how to secure batteries so they don’t move under stress.
Getting professional help for the installation is the right call. As REDARC auto electricians and REDNetwork members, Access Auto Electrics offers quality dual battery solutions.
Our team will make sure your system is up to code and works at its best. We can even add solar charging for complete off-grid setups.
Call 07 3366 8585 to get a custom quote.