Among endless WA tracks, where red dirt runs forever and phone bars fade to nothing. All you need is a power system to keep your food eatable, lights on & radio humming. If you rely on a single starter battery, the engine will crank in the morning.
Topo DC Power solves this problem with our reliable dual battery systems.
You can take the Centrefire 72Ah, the Long Range 144Ah, and the compact Tinny Mate 100Ah with you. Each dual battery system handles WA’s punishing heat and endless tracks.
Based in Perth, our team brings over forty years of R&D to every product, from the first sketch to the final circuit test. The result is tough & purpose-built gear for WA’s brutal heat and endless dust.
If you need the best dual battery Perth adventurers trust, read on.
Top Dual Battery Systems Australia 2025
After extensive field use and testing, our leading picks for best dual battery systems for Australian conditions Centrefire 72Ah, Long Range 144Ah, and Tinny Mate 100Ah.
Let’s discuss each one in detail.
1. 72Ah Centrefire
Our compact and high-performance unit, that packs some serious punch for its lunchbox size. It delivers over 65 usable amps (~780 Wh) and weigh only 10.5 kg. Means it can rescue you when space, weight and mobility matter the most.
It includes simultaneous charging via vehicle DC/DC, solar (up to 25 A input) and mains.
| Feature | Details |
| Capacity | 72Ah LiFePO₄ |
| Weight | 10.5 kg |
| Charge Inputs | Vehicle DC-DC, Solar (25 A), Mains |
| Use Case | Camping, tradies, short trips |
In field tests, it handles maximum Perth’s summer when mounted off-bonnet, and reduce thermal stress.
2. 144Ah Long Range
It doubles the Centrefire’s capacity in a slim 21 kg case for longer journeys and bigger loads. You can run two fridges or a full remote workstation for days with it. Slide it behind a seat or into a canopy and forget about power anxiety.
| Feature | Details |
| Capacity | 144Ah LiFePO₄ |
| Weight | 21 kg |
| Charge Inputs | Vehicle DC-DC, Solar (25 A), Mains |
| Use Case | Families, semi-retired travellers, longer trips |
Field tests proved its vigorous discharge capabilities for heavier loads & multiple appliances.
3. Tinny Mate 12V/100Ah
The Tinny Mate rounds out your modular power options. It is built compact and lightweight for marine, 4WD, or backup emergency use. Plus, you can also take it on your marine trips or fishing days, thanks to its UV-resistant, waterproof body.
| Feature | Details |
| Capacity | 12V/100Ah LiFePO₄ |
| Weight | ~10 kg |
| Setup | Plug & play |
| Charge Inputs | Vehicle DC-DC, Solar (25 A), Mains |
| Use Case | Boating, fishing, or coastal 4WD trips |
Parallel it with other Topo units for extra capacity or as a reliable spare battery setup.
Benefits of Dual Battery Systems in Perth Outdoors
Western Australia throws everything at adventurers wandering through its tracks. Our dual battery systems are engineered for all the possible challenges of Perth climate.
1. Reliable Power in Extreme Heat
Perth summers regularly climb past 40 °C. High cabin and engine-bay temperatures shorten the life of ordinary lead-acid batteries. Our external-mounted Topo units stay cooler and maintain consistent voltage even during peak heatwaves.
2. Protection of Starter Battery
Running fridges, lights, compressors, and inverters off a single starter battery risks a dead engine when you are miles away from help. Dual system isolates your personal power usage from vehicle’s and removes this risk.
3. Fast & Flexible Charging Options
Dual systems with smart DC-DC chargers harvest energy from all 3 power sources. E.g. alternators, solar panels, and mains. Means you can make the long sunny days of Perth a reliable source of free power with solar batteries.
4. Long Lifespan with Lithium Technology
Lithium iron phosphate (LiFePO₄) cells can handle thousands of charge cycles and cover 8-10 years of regular use. That durability is valuable in WA’s stop-start traffic and punishing off-road conditions.
5. Low Maintenance & Built-In Safety
Integrated battery management systems (BMS) prevent overcharge, under-voltage, and short circuits. Means you don’t have to worry about maintenance & just enjoy your adventure.
Lithium vs AGM: Right Tech for Perth Adventures
For the users who still stick with older AGM units and didn’t get the advanced lithium systems, here is a quick comparison of specs to help you out.
| Feature | LiFePO₄ | AGM / Lead-Acid |
| Weight | ~⅓ of AGM | Heavy |
| Cycle Life | 2,000+ real cycles | Few hundred |
| Depth of Discharge | 90% usable | ~50% safe |
| Charge Speed | Fast, efficient | Slower |
| Thermal Stability | Very good | Sensitive to heat |
AGM batteries are old-style and more affordable. But lithium iron phosphate (LiFePO₄) wins out as best dual battery systems for Australian off-roaders and travellers in 2025.
Installation and Costs in Perth
Proper dual battery installation Perth includes mounting, wiring, circuit breakers, a DC/DC charger (for lithium), or isolator (for lead-acid), and cable runs.
From our Perth operations, we estimated a dual battery install from 1,100-1,800 AUD. Complex vehicle layouts or long cable runs can push this estimate further.
DC-DC vs Isolator:
- DC/DC chargers regulate voltage for mixed battery chemistries. For lithium, they deliver proper charge profiles and compensate for alternator voltage drop.
- Voltage Sensitive Relays (Isolators) are simpler & cheaper for AGM systems, but lack regulation required for lithium batteries.
Modern dual battery setups in Australia favour DC/DC as the standard.
We offer installations in Perth through our workshop or via accredited mobile installers. Our plug-and-play systems cut wiring time in half. You can install in a rear cargo area, under a tray or in a canopy without engine-bay heat stress.
Looking for the best dual battery systems Perth travellers trust?
Power Your Next Adventure with Perth’s Dual Battery Experts
Topo DC Power designs and builds every system right here in Western Australia.
Our portable lithium power systems give you smart protection, plug-and-play convenience, and a 24-month workshop warranty. We have over four decades of electrical design experience and back every product of ours with local know-how and after-sales support.
to discuss a suitable dual battery WA for your 4WD, caravan or remote workstation.
FAQs
How much does a dual battery system cost in Perth?
Entry systems start near $1,000 installed. High-capacity lithium setups can exceed $3,000 depending on accessories.
What is the lifespan of a lithium dual battery?
Topo units are rated for over 2000 charge cycles, means 8–10 years of normal use.
Which is best for 4WD camping: AGM or lithium?
Lithium is better in terms of weight, cycle life and fast charging. AGM is cheaper but heavier and slower to recharge.
Is professional installation necessary?
Proper wiring and fusing are critical for safety and warranty support.
Can I run a fridge and inverter together?
Absolutely. Just choose the suitable battery capacity. E.g., 144Ah Long Range can match your high amp-hour usage easily.