Off-Grid Power System Batteries

Looking for off-grid power but unsure which battery is best for you?
Below you’ll find lots of information on different battery types, brands and models to help you understand the pro’s and con’s of different battery systems. We can design your off-grid system with the battery that’s perfect for your needs and help you gain independence from the grid.

  • Lithium-Ion
  • Sealed Gel
  • Flooded Lead Acid
  • Zinc-Bromide
  • Saltwater

Off-Grid Energy Australia utilise a variety of battery technologies from leading Australian and International suppliers to accommodate for a range of stationary battery storage applications. Which battery is right for you?

Battery Technologies

LG - Lithium Ion - off-grid battery for solar system

Lithium-ion

L-ion batteries have a number of advantages for stationary storage applications, including a higher energy density and the ability to deeply discharge. Reputable lithium-ion batteries are expected to last 10+ years provided they have a good battery management system (BMS) and remain at mild temperatures.

L-ion is relatively new to larger stationary applications such as off-grid and on-grid hybrid battery systems, however, major global manufacturers with extensive lithium-ion experience including Samsung, LG-Chem, BYD, Sony and Tesla have all brought high-performing lithium batteries to the renewable energy industry in recent times.

The highest quality lithium-ion batteries need to be used to ensure safety and reliability.

Sealed gel off-grid battery for solar system backup

Sealed Gel

A proven battery chemistry in off-grid storage applications, VRLA battery banks are sealed, require less maintenance than wet cell batteries, have superior charge current handling, lower installation cost, and have high recharge efficiency.

Using a reputable brand, correct sizing, suitable housing, and appropriate battery management, VRLA battery banks have been shown to last up to 15 years.

The high autonomy (backup storage needed at times of low energy input or increased demand) of the VRLA batteries still makes them a solid choice for off-grid applications.

Reliable lead acid batteries for solar system backup

Flooded Lead Acid Batteries (‘Wet-Cells’)

Flooded Lead Acid Batteries are a lower initial cost proven performer in standalone applications that are properly sized and regularly maintained by experienced persons.

Wet cells need regular maintenance in the form of checking the electrolyte level, adding distilled water to prevent drying out, regular cell top surface cleaning, and regular boost charging to overcome acid stratification.

Under Australian regulations wet-cells must also be segregated from all other equipment, requiring their own storage enclosure to meet strict safety guidelines. Their high maintenance and safety requirements make wet-cell batteries an unpopular choice these days.

ZCell battery backup for solar power system

Other Battery Technologies

New batteries are coming onto the market all the time, so keeping track of them all and knowing if they are more or less suitable for your project can be tricky. Battery technologies such as lead carbon, sodium-sulphur, zinc-bromide non-flow (Gelion), zinc-bromide flow (Redflow), or saltwater (Aquion), provide alternatives to the widely used lithium-ion or lead acid batteries – each with their own pros and cons.

We were selected to install one of Redflow’s pilot residential ZCell projects, and were the first company to import both the LG RESU battery into Australia back in 2014, and the Sonnenschein@home lithium battery back in 2015 when it was branded as BMZ. As such, we have experience with using brand-new battery technologies and are very careful about what products we use, and for what applications.

Which battery is right for your off-grid system?

The right battery technology for you will depend on your application and requirements, as they must be carefully sized to ensure a long system life and to meet your specific needs. We always gain a full understanding of your power needs, both current and in the future, before recommending which battery should be paired with your off-grid system.

Your preferences in relation to country of manufacture and managed/self-managed are always taken into account. The batteries below are listed to educate you on the main points for each one, so that you have a better understanding of their benefits when we quote on your off-grid system.

Please note:
  • We do not sell individual batteries on their own. All batteries that we sell are part of a specifically designed off-grid system for your home or business.
  • Cycle life and energy retention numbers listed below are subject to meeting manufacturers operating conditions.
  • Data is correct at the time of publishing and is subject to variation.

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Battery Technology
Battery Technology
Battery Management
Battery Management
Country Of Manufacture
Country Of Manufacture
Alpha commercial use solar batteries

Alpha M38210-S

  • Lithium-Ion
  • Self-Managed
  • China
  • Alpha
Alpha M38210-S brochure
  • Off-Grid or Grid-Connected systems
  • Commercial use
  • 10 Year Warranty, 80% Retention
  • Depth of Discharge – 90%
  • Cycle Life – ≥6000
  • Capacity – Modular 8.1kWh
  • Safe Lithium Phosphate Chemistry
  • Power & Energy Dense Options
Request An Off-Grid Quote
Alpha commercial use solar batteries

Alpha M48112-S

  • Lithium-Ion
  • Self-Managed
  • China
  • Alpha
Alpha M48112-S brochure
  • Off-Grid or Grid-Connected systems
  • Commercial use
  • 10 Year Warranty, 80% Retention
  • Depth of Discharge – 90%
  • Cycle Life – ≥6,000
  • Capacity – 5.7 kWh
  • Safe Lithium Phosphate Chemistry
  • Power & Energy Dense Options
Request An Off-Grid Quote
Alpha SMILE G3 S5 off-grid solar system battery

Alpha SMILE-G3-S5

  • Lithium-Ion
  • Self-Managed
  • China
  • Alpha
Alpha SMILE-G3 brochure
  • Off-Grid or Grid-Connected systems
  • 10 Year Warranty, 80% Retention
  • Depth of Discharge – 95%
  • Cycle Life – 8,000
  • Capacity – 3.6 to 5 kWh
  • Expandable to 60.5 kWh
  • Safe Lithium Phosphate Chemistry
  • Integrated BESS, Outdoor rated (IP65)
Request An Off-Grid Quote
BAE PVV Solar Series batteries for off-grid systems

BAE PVV Solar Series

  • Sealed Gel
  • Managed
  • Germany
  • BAE
BAE PVV Range brochure
  • Off-Grid or Grid-Connected systems
  • 5 Year Warranty (2yr pro-rata)
  • Depth of Discharge – 20%
  • Cycle Life – >3,000
  • Capacity – 2V, various kWh capacities
  • Proven Long Term Technology
  • Recyclable
Request An Off-Grid Quote
BYD LV Flex - off-grid solar battery

BYD B-Box LV Flex

  • Lithium-Ion
  • Managed
  • China
  • BYD
BYD B-Box LV Flex brochure
  • Off-Grid or Grid-Connected systems
  • 10 Year Warranty, 60% Retention
  • Depth of Discharge - 80%
  • Cycle Life - 6000
  • Capacity - 5 kWh
  • Expandable to 320 kWh
Request An Off-Grid Quote
BYD PremiumLVL - solar system battery

BYD B-Box Premium LVL

  • Lithium-Ion
  • Managed
  • China
  • BYD
BYD B-Box Premium LVL brochure
  • Off-Grid or Grid-Connected systems
  • 10 Year Warranty, 60% Retention
  • Depth of Discharge - 80%
  • Cycle Life - 6000
  • Capacity - 15.4 kWh
  • Expandable to 983 kWh
Request An Off-Grid Quote
BYD B-Box Premium LVS - solar system battery

BYD B-Box Premium LVS

  • Lithium-Ion
  • Managed
  • China
  • BYD
BYD B-Box Premium LVS brochure
  • Off-Grid or Grid-Connected systems
  • 10 Year Warranty, 60% Retention
  • Depth of Discharge - 80%
  • Cycle Life - 6000
  • Capacity - 4 kWh
  • Expandable to 256 kWh
Request An Off-Grid Quote
GenZ Lithium-Ion solar battery

GenZ Lithium-Ion

genZ battery brochure
  • Off-Grid or Grid-Connected systems
  • 10 Year Warranty, 80% Retention
  • Depth of Discharge – 80%
  • Cycle Life – 10,000
  • Capacity – 3 kWh
  • Easily expandable
  • Engineered in Australia
Request An Off-Grid Quote
Powerplus Eco Series solar system battery

Powerplus Eco4840P

Powerplus Eco brochure
  • Off-Grid or Grid-Connected systems
  • 10 Year Warranty, 60% Retention
  • Depth of Discharge – 80%
  • Cycle Life – 3780
  • Capacity – 4 kWh
  • Unlimited Scalability
Request An Off-Grid Quote
PowerPlus Life Premium 48V 3.3kWh Lithium Battery for solar systems

PowerPlus LiFe4838P

Powerplus LiFe brochure
  • Off-Grid or Grid-Connected systems
  • 10 Year Warranty, 80% Retention
  • Depth of Discharge – 80%
  • Cycle Life – 3780
  • Capacity – 3.8 kWh
  • Unlimited Scalability
Request An Off-Grid Quote
Sigenergy Sigenstor battery with integrated solar inverter

Signergy SigenStor

Signergy SigenStor brochure
  • Off-Grid or Grid-Connected systems
  • All-In-One, Battery + Inbuilt Inverters
  • 10 Year Warranty
  • Integrated EV DC Charger options
  • Single and 3-Phase options
  • Capacity - 5.2 kWh and 7.8 kWh options
  • Expandable to MWh+
Request An Off-Grid Quote
Tesla Powerwall 2 - grid connected battery

Tesla Powerwall 2

  • Lithium-Ion
  • Managed
  • USA
  • Tesla
Tesla Powerwall2 brochure
  • Grid-Connected systems only
  • 10 Year Warranty
  • Built-in Inverter Charger
  • Compact & Sleek Design
  • Capacity – 13.5 kWh
  • Easily expandable
Request An Off-Grid Quote
Tesla Powerwall 3 solar battery with integrated inverter

Tesla Powerwall 3

  • Lithium-Ion
  • Managed
  • USA
  • Tesla
Tesla Powerwall 3 brochure
  • Grid-Connected systems
  • All-In-One, Battery + Inbuilt Inverters
  • 10 Year Warranty
  • Nominal Output Power - 11.04kW
  • Capacity - 13.5 kWh
  • Expandable to 54 kWh
Request An Off-Grid Quote
ZYC Energy Simpo 5000 solar system battery

ZYC Energy Simpo 5000

ZYC Energy Simpo 5000 brochure
  • Off-Grid or Grid-Connected systems
  • 10 Year Warranty, 70% Retention
  • ‘Hot Swappable’ - replace without interruption
  • Cycle Life - > 6000 @ 25°C
  • Capacity - 5.12 kWh
  • Expandable to 328 kWh
Request An Off-Grid Quote