A Guide to Buying the Best Off-Grid Battery System in Australia

When looking into options for your off-grid battery system, you want technology you can rely on. Choosing a trusted brand and the right battery type is key: your off-grid batteries need to stand up to both your energy needs, and the tough conditions.

Finding the right battery storage for your off-grid solar system

The best battery system for your needs will depend on what your set-up requires, and your energy consumption – but in general, you want a system that:

1. Has a long lifespan: Look for long warranties and high “cycle life”. Cycle life means how many times the battery can charge or discharge before dipping below a certain capacity. This is important for longevity as it impacts how much energy the battery can hold.
2. Keeps working in the heat: Batteries in Australia need to be able to survive heat. Whether for a residence, a hot shed, or outdoor operations, the system needs to be able withstand extreme temperatures.
3. Is expandable: If your backup power needs change over time – modular, expandable systems can be added to later to store more energy.
4. Is safe and reliable: Using a battery chemistry proven to perform, made a reputable manufacturer, and installed by the experts.

Your guide to commonly used battery chemistries

Battery storage systems are one area you really don’t want to cut costs – you tend to get what you pay for, and buying cheaper options can often mean having to replace them sooner. The battery type (cell chemistry) is one part of it, and manufacturing standards is another.

Lead Acid Batteries (old battery technology)

You don’t tend to see lead acid batteries used much anymore as better options are widely available, but these were traditionally the most reliable battery storage option with an average lifespan of 3-7 years. We would not recommend or use these today.

Lithium Iron Phosphate Batteries (LiFePO4)

These are the safer version of earlier lithium-ion batteries; LiFePO4 batteries are light, compact, durable, and less likely to overheat or catch fire than lithium-ion. They have excellent energy density and have a battery lifespan from 5-15 years depending on the manufacturer.

LiFePO4 batteries are generally considered the best all-rounders, particularly for residential usage. They offer superior reliability and safety while remaining lightweight and relatively affordable.

Lithium Titanate Batteries

These are a premium option that offer a very long lifespan of 20 years or more. They’re perfect for operations in extreme temperatures and in high-power, high-cycle situations.

Flow Batteries

Flow batteries are another long-life option. They’re ideal for commercial, large-scale operations with a 20+ year long lifespan and highly consistent energy delivery over extended periods.

Our picks for solar energy storage

We only use the best batteries for our installations – we’ve had too many issues with the warranties on cheaper batteries over the years.  We think our customers deserve solar energy storage they can rely on, with comprehensive warranties the manufacturers will adhere to.

For residential or small operations, we recommend the genZ Residential or PowerPlus Eco Series – both lithium batteries that designed to support an uninterrupted power supply.

Here’s a side-by-side look at their features and performance:

What size system do I need?

The right off-grid battery system depends on how much power you use – and how often you need it. Whether you’re living on a rural property or running a remote station, it all starts with your daily energy requirements.

For off-grid living:

If you’re looking to power your home, a work shed, or a holiday property (like a bed and breakfast), you’ll need to consider:

• Daily appliance usage: Lights, fridges and freezers, TV, fans, washing machine, and internet add up quickly.
• Backup required: Do you want 1-2 days of stored power for cloudy weather? Do you have medical devices and other appliances that need to be powered through the night and on low-power days?
• Expansion needs: Can your system grow with your needs (e.g. adding air con or electric vehicle charging later)?

For farms, businesses and remote sites:

Whether you’re an orchard with a humming production, a farm needing reliable energy way off the beaten track, or mining site looking to minimise downtime, there are some considerations that come with larger solar battery systems. Typical challenges include:

• High energy loads: Running pumps, cold rooms, workshop tools, irrigation or heavy machinery
• Critical uptime: Sites that must operate 24/7 (e.g. farms, water stations, monitoring sites)
• Multiple buildings or large facilities: Including site offices, accommodation blocks or storage sheds
• Longer autonomy: Need to store 2-3+ days of power to ride through bad weather or site shutdowns

Getting a personalised estimate for your off-grid system

We’ve made getting an estimate easier – you can use our off-grid solar calculator to estimate your energy potential, based on your current energy usage.

Can I get a rebate for my off-grid solar power system?

Depending on where you live, your system size, and whether you’re an eligible resident or small business – yes.

The WA Residential Battery Scheme is open (from July 2025) to help offset the cost for eligible households. It can be combined with the Federal battery rebate, with up to $5,000 – $7,500 in support for a 10kWh system.

If you’re in Western Australia, you can use our guides to find out more about the criteria and details for the WA Residential Battery Scheme 2025, the Federal Solar Battery Rebate 2025, and how these can be combined in eligible scenarios.

How Statewide Power helps you go off-grid

Setting up off-grid solar power systems for your home or commercial property can be overwhelming when there are so many options to wade through – it’s worth speaking to the experts first.

Statewide Power has years of experience designing and delivering stand-alone power systems for off-grid properties. We create reliable, efficient and scalable solar solutions so you can generate clean energy for years to come.

Need an off-grid set up for your residence or operations? Why not contact us today to discuss what you need, and how we can deliver it.