Battery Trays

About this range

A solid battery tray is the foundation of any dual battery system, holding your second battery securely through corrugations and rough tracks. We stock Piranha battery trays made to suit popular 4x4s including the Toyota Hilux, Prado and 200 Series LandCruiser, Isuzu D-Max, Mazda BT-50 and Nissan Navara.

Order online with Australia-wide shipping, or have your tray supplied and fitted as part of a dual battery setup at our Burwood workshop in Melbourne's east. Call 03 9808 8966 for advice.

21 products

Buying guide

Dual battery and 12 V power explained

A second battery runs your fridge, lights and charging without touching the starting battery. Modern vehicles and lithium batteries change how that system should be built.

  1. Smart alternators

    Many late-model vehicles have smart alternators that vary their voltage. A simple isolator doesn't charge a second battery well from these, so a DC-DC charger is recommended (Redarc).

  2. Where lithium can go

    Lithium batteries must not go in the engine bay: the heat is too much (Redarc, Enerdrive). They go in the cabin, tub or canopy.

  3. Charge it correctly

    Lithium needs a charger with a lithium profile, and most can't be charged below 0 C unless the battery is heated. Don't mix battery brands or sizes in one system (Redarc).

  4. Sizing solar

    Work out how many watt-hours you use a day and divide by 5 to 6 sun hours to size your panels. A panel laid flat can lose up to 38% of its output (Enerdrive).

Choosing a battery tray

Fitment comes first. Battery trays are shaped around a specific engine bay, and the same model can change between years and engines, which is why Piranha builds trays to suit individual vehicles rather than one size fits all. Confirm the tray matches your exact model, year and engine before you order.

Next, match the tray to the battery you plan to run. Batteries vary in footprint, height and weight, so compare dimensions before committing, and remember that a heavy battery bouncing over corrugations puts real strain on its mounts. If under bonnet space or heat is tight, mounting the battery in the tub or canopy can be a better path, which changes the hardware you need.

Related categories

Common questions

Do I need a DC-DC charger?

If your vehicle has a smart alternator, yes: isolators charge poorly from them. A DC-DC charger also gives the second battery the right charging profile, including for lithium (Redarc).

Can a lithium battery go under the bonnet?

No. Battery makers say lithium batteries can't handle engine bay heat and must not be installed there (Redarc, Enerdrive).

Lithium or AGM?

Lithium needs a charger with a lithium profile, a location out of the engine bay and, below 0 C, a heated battery to charge. Compare usable capacity and weight on each battery's specifications, and follow its maker's mounting guidance.

How much solar do I need for a fridge?

Add up your daily use in watt-hours, then divide by 5 to 6 sun hours (Redarc). Allow extra if the panel will lie flat or sit in shade.

Can I run my fridge off the starting battery?

You can, but you risk a flat battery and no start. A second battery with a DC-DC charger keeps the starting battery for the engine.

Keep going

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