Deep Cycle Batteries: Lithium and AGM
Buy high-quality deep cycle batteries online for caravans, 4WDs, camping, and marine use.
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Deep Cycle Batteries for Caravans, 4WDs and Camping
Deep cycle batteries keep power steady when you’re away from mains. They run fridges, pumps, lights, and chargers in caravans, RVs, and 4WD setups. They store solar energy and give you reliable power day and night.
Ideal for caravans and campers heading off-grid. Trusted by 4WD owners, boaters, and RV travellers across Australia. Perfect for weekend getaways or long outback trips where reliable energy makes life easier.
At Outback Equipment you’ll find over 140 options, from compact 42Ah fridge batteries to heavy-duty 300Ah lithium packs. We stock trusted brands like Enerdrive, Hardkorr, Camec, Remco, Redarc, Projecta, Victron, BLA, Companion, and Sphere. Whether you need a slimline lithium with Bluetooth, an AGM for caravan use, or a full 24V or 36V pack for marine setups.
AGM vs Lithium Deep Cycle Batteries
When choosing a deep cycle battery, the two main options are AGM (Absorbed Glass Mat) and Lithium (LiFePO4). Both are reliable, but each suits different setups and budgets.
AGM Deep Cycle Batteries
- Lower upfront cost, easy to get started
- Can also work as a starter battery
- Better suited to colder conditions
- Spill-proof and sealed for rough terrain
- Best for occasional caravan or RV use
Lithium Deep Cycle Batteries
- Up to 50% lighter than AGM, saves space and weight
- Longer cycle life with 80–90% usable capacity
- Faster charging with higher discharge rates
- Safer with built-in Battery Management Systems (BMS)
- Ideal for long-term off-grid camping or 4WD setups
Quick Comparison: AGM vs Lithium
| Feature | AGM Battery | Lithium Battery (LiFePO4) |
|---|---|---|
| Upfront Cost | Lower | Higher |
| Weight | Heavy | Up to 50% lighter |
| Usable Capacity | ~50% of total Ah | 80–90% of total Ah |
| Cycle Life | 500–1,000 cycles | 2,000+ cycles |
| Cold Weather Use | Can charge in freezing temps | Needs protection below 0°C |
| Best For | Weekend trips, occasional RV or caravan | Off-grid living, long-term travel |
What Else You Might Need for Your Setup
A deep cycle battery is only one part of your power system. To get the most from it, you’ll want a few extra pieces of gear:
- Battery Boxes & Portable Power: Turn your battery into a portable hub with 12V and USB outlets. Handy for fridges, lights, and chargers at camp.
- Battery Chargers: Keep your battery topped up from mains power or while driving. A DC-DC charger is essential for dual battery systems in 4WDs.
- Solar Panels & Controllers: Store free solar energy during the day. A smart regulator prevents overcharging and extends battery life.
- Inverters: Convert 12V power into 240V so you can run appliances like coffee machines, laptops, or small microwaves.
- Wiring Kits & Accessories: Quality cables, fuses, and shunts make sure your system runs safely and efficiently.
Frequently Asked Questions About Deep Cycle Batteries
Is it safe to slowly discharge my AGM battery over multiple days?
Yes, slow discharge is better than fast or deep discharge. Still, regular discharge below 50 percent reduces battery lifespan. To avoid surprises, install a battery monitor.
What affects battery lifespan and how do I make them last?
Battery life depends on the type of battery you choose and how you use it. Pick a model that matches your power needs and travel style, from running a caravan fridge and lights to powering larger appliances.
Avoid deep discharge where possible and recharge often. A good battery monitor takes the guesswork out by showing you how much charge is left and when it is time to top up. With proper care, your system will give you long lasting power for years to come.
Is there a specific deep cycle battery you recommend for marine use?
Yes. For boats and marine setups, the BLA Marine Lithium range is purpose-built for these conditions. The batteries use LiFePO₄ chemistry, which gives them a much longer cycle life and higher energy density than traditional lead-acid. They recharge quickly, deliver consistent voltage, and weigh less than half of an equivalent AGM or SLA battery.
