Growatt VS SolaX Battery: Which Is Better in Australia 2026?

When deciding between Growatt and Solax batteries for your home, knowing which performs better, lasts longer, and offers the best value is crucial. This Growatt vs Solax Battery comparison breaks down their performance, cost, warranty, backup capabilities, and reliability during blackouts. We’ll help you see which battery suits your household needs in Australia in 2026, so you can make an informed choice and get the most out of your solar system.

Growatt vs SolaX Battery: Side-by-Side Comparison

Before comparing the detailed features, price and backup options, here is a quick side-by-side overview of Growatt vs SolaX batteries for Australian homes.

Feature	Growatt	SolaX
Main Battery Options	APX HV Battery AU, ALP LV Battery E1/E2	T-BAT H 5.8 V3, T-BAT-SYS-HV-5.8
Battery Type	LiFePO4 / LFP, depending on model	LiFePO4 / LFP
Capacity Range	APX: around 5–30kWh, ALP: 5–50kWh	T-BAT H 5.8 V3: 5.8–34.6kWh per single cluster
Voltage Type	High-voltage and low-voltage options	Mainly high-voltage battery options
Best For	Homes needing affordable and scalable battery storage	Homes wanting modular storage with strong SolaX inverter integration
Backup Support	Depends on inverter, backup box, wiring and selected loads	Depends on inverter, EPS/backup setup, wiring and selected loads
Installation	Depends on selected battery model and site setup	Wall or floor mounting, depending on model
Monitoring	Growatt monitoring platform	SolaX monitoring platform

About Growatt Batteries

Growatt batteries are designed for homeowners who want affordable and scalable solar energy storage. In Australia, Growatt offers battery options such as APX HV Battery AU and ALP LV Battery systems, depending on inverter compatibility and system design.

Growatt batteries use LiFePO4 / LFP battery technology, depending on the selected model. This battery chemistry is commonly used in home solar storage because it offers strong safety, stable performance and long service life.

One of the main advantages of Growatt batteries is their modular design. Homeowners can choose a smaller battery setup for basic night-time use or expand the system for higher storage needs, depending on the battery model and compatible inverter.

Growatt can be a good option for small to medium homes, larger homes and households that want a cost-effective battery storage solution. However, the final performance depends on battery capacity, inverter compatibility, installation design, backup setup and daily energy usage.

Growatt Battery Series Overview

According to Growatt Australia’s official product range, the main battery system options include APX HV Battery AU and ALP LV Battery systems.

• APX HV Battery AU: A high-voltage battery option suitable for compatible Growatt hybrid and battery-ready inverter systems.
• ALP LV Battery: A low-voltage LiFePO4 battery system available in 5–50kWh configurations, designed for flexible residential energy storage.
• ALP LV Battery E1/E2: Modular low-voltage battery options with IP66 outdoor installation support, cobalt-free LiFePO4 chemistry and remote monitoring support.

The right Growatt battery depends on inverter compatibility, system size, backup needs and installation requirements.

Growatt Battery Pros & Cons

Pros:

• Budget-friendly price: Attractive to people with a small budget, because energy is available at low cost and even small families can light up the house.
• Stackable modules: Batteries can be placed on top of each other, so it is possible to store large amounts of energy in small spaces and the house can be enlarged as needed.
• Local support: Growatt batteries offer convenient local support in Perth, helping homeowners address issues quickly and efficiently. While general claims about local service can be mentioned, specific details should be cited from official sources when available.
• Cobalt-free LFP battery: This battery retains energy for a long time and is safe for the environment.

Cons:

• Many connection points in the modular system: This can be complicated for installers and may not work properly if not connected properly.
• Some installers call it “NoWatt”: They use this name because of some limitations of the battery and it warns consumers. 
• Limited Off-Grid Options: Not all Growatt batteries are suitable for off-grid use. In some cases, an additional off-grid or hybrid inverter is required to operate the battery effectively. This ensures reliable performance when the system is not connected to the main grid. 

About SolaX Batteries

SolaX batteries are designed for homeowners who want modular solar energy storage with strong inverter integration. They can store excess solar energy during the day and make it available at night, during peak electricity periods or during selected backup situations.

SolaX battery systems use LiFePO4 / LFP battery technology, depending on the selected model. This battery chemistry is commonly used in home solar storage because it offers stable performance, strong safety and long service life.

One of the key benefits of SolaX batteries is their modular design. Smaller battery modules can be combined to create a larger storage system, depending on the model, inverter compatibility and installation design.

SolaX batteries may be suitable for small homes, medium homes and larger households that need flexible battery storage. Backup support depends on the compatible inverter, EPS/backup setup, battery capacity, wiring and selected appliances.

SolaX Battery Series Overview

SolaX offers high-voltage residential battery options for Australian solar storage systems, including T-BAT-SYS-HV-5.8 and T-BAT H 5.8 V3.

• T-BAT H 5.8 V3: A high-voltage LFP battery system with modular capacity from 5.8kWh to 34.6kWh per single cluster.
• T-BAT-SYS-HV-5.8: A high-voltage LiFePO4 battery system designed for compatible SolaX hybrid inverter setups.
• Modular battery design: SolaX batteries can be expanded depending on model, inverter compatibility and system design.

SolaX batteries are suitable for homes that need modular storage, backup support for selected loads and strong integration with compatible SolaX inverter systems.

Solax battery pros & cons

Pros:

• Small modules can be stacked on top of each other, which takes up less space in the house and makes it easy to increase power, which makes solar battery expansion easier.
• LiFePO4 batteries hold power for a long time and help to light the house and run appliances.
• There is a 10-year warranty on the battery, so you can rest assured when using it.
• With a large battery, the lights and appliances in the house will still be on even if there is a blackout, which acts as a backup power battery.

Cons:

• Adding new modules may require approval after a year, so it is not always easy to expand.
• Some systems do not have an AC-coupled option, which may not help to run all types of appliances.
• There is no local office in Australia, so it is difficult to get direct help.
• In off-grid systems, the battery needs to be tested over the long term, so that it is always safe.

Growatt vs SolaX Battery Cost Comparison

Growatt and SolaX both offer scalable solar battery options for Australian homes. The right choice depends on your battery capacity needs, inverter compatibility, backup requirements and budget.

Growatt batteries are generally available in a wider range of capacity options, starting from 10kWh and going up to 50kWh. SolaX batteries also offer flexible storage options, with different module configurations available for medium to larger homes.

Growatt Battery Price in Australia

Battery Capacity	Approx. Price (AUD)
10kWh	A$5,405*
15kWh	A$5,740*
20kWh	A$6,515*
25kWh	A$7,500*
30kWh	A$8,515*
40kWh	A$15,110*
50kWh	A$18,160*

Growatt battery systems start from approximately A$5,405 for a 10kWh system. The 15kWh Growatt battery price is approximately A$5,740, while the 20kWh system is approximately A$6,515. Larger options such as 30kWh, 40kWh and 50kWh are also available for homes with higher energy storage needs.

* Final price may varies based on location, installation requirements. Contact us for a personalized quote and expert advice.

SolaX Battery Price in Australia

SolaX Battery Option	Battery Capacity	Approx. Price (AUD)
SolaX Module 3.36kWh	14.4kWh	A$5,519*
SolaX Module 3.36kWh	21.6kWh	A$7,129*
SolaX Module 3.36kWh	32.4kWh	A$8,725*
SolaX Module 3.36kWh	43.2kWh	A$12,358*
SolaX Module 3.36kWh	50kWh	A$14,130*
SolaX Module 5.1kWh	20kWh	A$7,917*
SolaX Module 5.1kWh	30kWh	A$9,311*
SolaX Module 5.1kWh	40kWh	A$13,241*

SolaX battery systems start from approximately A$5,519 for a 14.4kWh system. The 21.6kWh SolaX battery price is approximately A$7,129, while larger options such as 32.4kWh, 43.2kWh and 50kWh are available for higher storage needs. SolaX also offers 5.1kWh module-based options, including 20kWh, 30kWh and 40kWh systems.

Overall, Growatt may suit customers looking for affordable battery storage across a wide capacity range, while SolaX may suit homeowners who want flexible modular battery options. The best choice depends on your inverter, energy usage, backup needs and installation requirements.

* Final price may varies based on location, installation requirements. Contact us for a personalized quote and expert advice.

Warranty & Support: Growatt vs SolaX Battery

Growatt

Growatt battery warranty and support depend on the selected battery model, inverter compatibility and installation requirements. In Australia, Growatt’s main battery options include APX HV Battery AU and ALP LV Battery systems.

Growatt ALP/APX batteries use LiFePO4 battery technology and are designed for long-term residential energy storage. Warranty coverage should always be checked from the latest Growatt warranty terms before installation.

SolaX

SolaX batteries also come with warranty support, depending on the selected model and official warranty terms. The SolaX T-BAT H 5.8 and T-BAT H 5.8 V3 series use LiFePO4 / LFP battery technology and offer modular battery storage for compatible SolaX inverter systems.

SolaX battery systems include safety and protection features such as IP-rated protection, battery management and remote monitoring support. The final warranty coverage depends on the model, installation date, operating conditions and warranty terms.

Overall, both Growatt and SolaX offer reliable battery storage options, but warranty support depends on choosing the right model, using a compatible inverter and following the manufacturer’s installation requirements.

Backup Power: Growatt vs SolaX Battery

Both Growatt and SolaX batteries may support backup power when paired with compatible inverters and correct backup wiring. However, backup performance depends on battery capacity, inverter output, EPS or backup box setup, selected loads and installation design.

For essential loads such as lights, Wi-Fi, fridge and phone charging, both brands can be suitable when installed with the correct backup configuration. Heavy appliances such as ducted air conditioning, EV charging, pool pumps or electric heating may drain the battery faster and may not be supported by every setup.

Growatt vs Solax Battery Backup Comparison

Battery Brand	Battery Series	Essential Load Backup	Larger Load Backup	Inverter / Backup Dependency	Notes
Growatt	APX HV Battery AU	May support lights, Wi-Fi, fridge and small appliances	Depends on inverter output, battery capacity and backup setup	Requires compatible Growatt inverter and backup configuration	Suitable for homes needing high-voltage scalable battery storage
Growatt	ALP LV Battery E1/E2	May support essential loads with the correct setup	Depends on inverter, wiring and selected appliances	Requires compatible inverter and system design	Suitable for flexible low-voltage residential storage
SolaX	T-BAT H 5.8 V3	May support essential loads during outages	Depends on EPS/backup setup and inverter capacity	Requires compatible SolaX inverter and EPS/backup configuration	High-voltage modular battery option
SolaX	T-BAT-SYS-HV-5.8	May support lights, router, fridge and selected small loads	Limited by inverter output and system design	Requires compatible SolaX hybrid inverter setup	Suitable for modular home battery storage

Which Battery Is Better for Small vs Large Homes?

Choosing between Growatt and SolaX depends on your home size, energy usage, inverter compatibility and backup needs.

For Small Homes

Growatt ALP LV Battery can be suitable for smaller homes that need flexible, low-voltage battery storage. Smaller configurations may help support regular night-time energy use and selected essential loads.

Growatt APX HV Battery AU may suit homes using compatible Growatt high-voltage inverter systems, especially where a modular battery setup is preferred.

SolaX T-BAT H 5.8 V3 can be a good option for homes that need a high-voltage modular battery system with compatible SolaX hybrid inverters. Smaller configurations may support essential loads such as lights, Wi-Fi, fridge and phone charging.

For Medium to Large Homes

Growatt ALP LV Battery offers larger capacity options, making it suitable for homes that need more storage for evening usage and higher daily energy demand.

Growatt APX HV Battery AU can be suitable for medium to larger homes using compatible Growatt inverter systems and requiring scalable high-voltage battery storage.

SolaX T-BAT H 5.8 V3 can also be expanded into larger battery configurations, depending on inverter compatibility and system design. It may suit homes that want modular storage and backup support for selected loads.

Conclusion

When comparing Growatt vs SolaX batteries, both brands offer reliable solar battery storage options for Australian homes. Growatt may be a better choice for homeowners who want flexible battery capacity options across low-voltage and high-voltage systems. SolaX may suit homes that prefer a high-voltage modular battery system with strong inverter integration.

Both brands use LiFePO4 / LFP battery technology, depending on the selected model, and both can help store excess solar energy for night-time use, peak-rate savings and selected backup support.

The best choice depends on your inverter compatibility, battery capacity needs, backup requirements, installation design and budget. For the right recommendation, it is always best to compare your daily energy usage and get a personalised quote.

FAQs

Can Growatt batteries be used off-grid?

How long can the SolaX battery provide power?

The battery life depends on the load used. The battery lasts longer when running small loads such as lights or a router, while it lasts for a shorter period of time when running large loads such as an entire house. The battery is long-lasting and can use about 90% of the total energy.

Do Growatt batteries provide full home backup?

Not all Growatt batteries can run the entire home. Some models may require a Growatt Backup Box, which only runs partial loads. It acts as a small backup power battery.

Is SolaX suitable for large households?

Yes, the SolaX modular T-BAT HS series can be used for large households. By combining small modules, up to 47.92kWh of energy can be obtained.

Are Growatt batteries safe?

Yes, Growatt batteries use cobalt-free LFP batteries. So it is safe and retains energy for a long time. It is a reliable home battery that provides constant power to the home.