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.

About growatt batteries

Growatt batteries: Among the Pros & Cons, this battery holds power in the home and helps light up at the end of the day. Growatt Batteries is a Chinese company that specializes in budget-friendly solar inverters and started making home batteries in 2019. This battery uses lithium iron phosphate (LiFePO4) cells, which hold power for a long time and can be built up by combining small modules to create larger batteries. 

The modules can be easily stacked, so that the battery can be built up to suit the size of the home. Their warranty has now improved somewhat, especially for the ARK series, but is only effective for a limited time if used heavily daily. A hybrid inverter is always required to run the battery. In some cases, it is better to keep the battery outside or in a place where it is not wet, so that it lasts longer.

Growatt Battery Series Overview

• ARK Series: Modular, medium-to-large home capacity, improved warranty, requires a hybrid inverter.
• LY Series: Compact design for smaller homes, budget-friendly, easy to install.
• SPH Series: High-capacity, modular, suitable for homes with higher energy demands, expandable as needed.
• K Series: Premium option with long lifespan, strong performance during blackouts, ideal for heavy daily use.

Key Features

• Affordable: The battery is available at a low cost, which is good for small budgets.
• Modular Design: Small modules can be combined to create a larger battery, and can be expanded as needed.
• Long-lasting Power: The LiFePO4 battery holds power for a long time.
• Warranty Update: The warranty for the ARK series has been improved, but is limited to heavy daily use.
• Hybrid Inverter Required: The battery always works with a hybrid inverter.

Thus, Growatt Batteries are convenient for the home, but it is important to be careful about usage and warranty.

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:

• Warranty can be short: If the battery is used a lot every day, the 10-year warranty can be reduced to just a few years.
• 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. 

As can be seen from this Growatt VS Solax Battery comparison, Growatt Batteries are budget-friendly and easy to scale up, but they have some limitations. While there are advantages to battery scalability, some users may be concerned about the warranty and connection points. Being a budget-friendly solar battery, it is a good option for small budgets, and having a LiFePO4 battery allows for long-term power retention. Considering these factors, it is easy to choose the right battery and get regular light in the house.

About SolaX Batteries

Looking at the SolaX battery review, it is clear that these batteries work equally well for small homes to large families. LiFePO4 solar batteries can hold power for a long time and help light the house. Small modules can be combined to make a large battery and it is easy to use as a modular battery system. The batteries are safe from water or dust, as they are IP65 and IP66 rated. Easy to install on the wall or floor and new modules can be added as needed in the first year. Each battery has a 10-year warranty, making it safer to use.

SolaX Battery Series Overview

• T-BAT HS Series: Stackable modules, high safety, 10-year warranty, ideal for homes of all sizes.
• X-Hybrid Series: Compatible with SolaX hybrid inverters, modular expansion possible, suitable for medium to large households.

Key Features

• Stackable modules: Small modules can be stacked on top of each other, saving space and providing more power.
• Long-lasting power: LiFePO4 batteries do not lose power slowly, making it easy to operate lights and appliances in the home every day.
• Water and dust resistance: The battery is protected from heat or rain due to its IP65/IP66 rating.
• Easy expansion: New modules are easy to add and can be easily expanded with approval in the first year.
• Long warranty: The 10-year warranty makes the battery safe and long-lasting.

Using this battery, the lights in the house are always on and the appliances are running. The small battery modules are easy to assemble and new modules can be added if needed. The LiFePO4 battery retains power and the IP65/IP66 rating ensures safety in the house. The 10-year warranty ensures battery life and is specifically applicable to the Solax T-BAT HS series. It is a simple, safe and powerful solution for small homes or large families.

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.

SolaX batteries are easy to expand and provide power during blackouts. LiFePO4 batteries hold power for a long time and small modules can be placed well in the house.  The 10-year warranty makes it safe to use and as a modular home battery, it keeps the power in the house stable.

Growatt VS Solax: Cost Comparison

This section will show how much Growatt VS Solax Battery costs and how convenient it is. When installing a battery at home, price, capacity, warranty and backup power are important. This comparison will help you understand which battery is better for a family or small house. It makes it easier to calculate the cost when buying a battery and helps you understand the home battery cost. Using the Australian solar rebate makes the installation more affordable, so it is easier to make the right choice.

Feature	Growatt	SolaX
Price per usable kWh	$550 – $950	$600 – $1,050
Warranty	10 yrs / 6,670 kWh per module 10 yrs / 3.46 MWh per kWh	10 yrs / 3.46 MWh per kWh
Usable Capacity	2.3 kWh – 36.8 kWh	9.2 kWh – 10 kWh
Backup Power	Optional with Backup Box	Fast backup, critical loads

Growatt

Growatt batteries are relatively affordable and practical for small to medium-sized homes. A 10 kWh unit costs around AUD $5,625, a 15 kWh unit about $7,200, and a 20 kWh unit approximately $8,775. Larger systems include the 30 kWh battery at $12,175, the 40 kWh battery around $19,170, and the 50 kWh battery about $22,620. Government rebates can further reduce the cost, making Growatt batteries a cost-effective choice for Australian households.

Solax

Solax 3.36 battery systems come in multiple capacity options for residential and commercial use. The 14.4 kWh system costs around AUD $10,359, the 21.6 kWh system about $13,169, the 32.4 kWh system $16,965, the 43.2 kWh system $21,038, and the 50 kWh system $23,090. Government rebates help reduce the battery cost.

Note: Final cost depends on factors such as battery module size (capacity), installation complexity, system configuration, site conditions, and local government requirements.

This comparison shows how convenient a battery is the right battery for the home can be chosen by combining price and capacity. Understanding solar battery pricing makes budget planning easier and using the Australian solar rebate can significantly reduce costs

For the best price and expert advice, get in touch with us at Aussie Solar Tech. We’ll help you choose the right solar battery Brand and provide a quote based on your home’s actual energy needs.

Warranty & Support: Growatt vs Solax Battery

Growatt

The updated warranty of Growatt ARK series batteries is 10 years or up to 6,670kWh per module. If the battery is used more daily, the warranty is reduced a lot. Earlier, local support was bad, but now it is improving a bit and getting support is becoming easier.

Solax

SolaX batteries have a 10-year warranty, which is easy to understand and safe to use. Easy approval is available in the first year to add new modules, so the battery can be expanded as needed. IP65/IP66 protection ensures that the battery will work for a long time and will be safe. This battery is reliable in terms of both solar battery warranty and battery support, so it is a reliable home battery that keeps the power in the house.

Backup Power & Off-Grid: Growatt vs Solax Battery Comparison

Growatt

Not all Growatt batteries provide full power to the home during a blackout. Some models may require a Growatt Backup Box, which ensures backup power. Only the SPF 3000-5000 ES hybrid inverter is available for off-grid use, which is limited and can be used specifically. 

Solax Battery Backup Options

SolaX batteries can provide power to a home when the grid is down, but this depends on the battery series.

• T-BAT HS Series: Provides fast backup for small and critical loads. Able to run lights, refrigerators or routers in seconds when the grid is down.
• X-Hybrid  Series: Can run large loads, with the ability to run an entire home as needed..

Backup capacity depends on battery series, size and connected inverter. Solax batteries can be used with off-grid or critical load setups, ensuring that critical devices are always on. Federal or local battery rebate information should be noted in the technical or finance section, not the backup section. With the correct series and system configuration, Solax batteries can provide reliable backup power from small emergency loads to entire home loads.

Growatt vs Solax Battery Backup Comparison

Battery Brand	Series	Small Load Backup (Lights, Fridge, Router)	Large Load Backup (Whole House)	Inverter Dependency	Notes
Growatt	ARK	Supported, fast backup not guaranteed	Depends on configuration	Yes, hybrid inverter required	Best for medium to large homes
Growatt	LY	Supports small loads	Limited	Yes, hybrid inverter required	Suitable for small homes, budget-friendly
Growatt	SPH	Supported, larger loads possible	Yes, can power the house	Yes	Ideal for high-energy households
Growatt	K	Supported, fast backup	Yes, whole house	Yes	Premium option for heavy daily use
SolaX	T-BAT HS (3.6kWh / 5.1kWh modules)	Fast backup for critical loads	Limited large load	Depends on inverter	Best for essential loads
SolaX	X-Hybrid	Can power small loads	Medium to large loads possible	Yes	Suitable for medium to large homes

Which Battery Is Better for Small vs Large Homes?

Choosing the right battery depends on your household size and energy needs:

For Small Homes:

• Growatt LY Series: Compact, budget-friendly, supports essential loads like lights and fridge.
• Growatt ARK Series (small configuration): Can handle small to medium loads if modular setup is used.
• Solax T-BAT HS Series (3.6kWh / 5.1kWh modules): Ideal for essential appliances only, easy to install, space-saving.

For Medium to Large Homes:

• Growatt SPH & K Series: Can power the entire house, suitable for higher energy usage and heavy daily loads.
• Solax X-Hybrid Series: Modular, fast backup for critical loads, expandable to support larger systems.
• Solax T-BAT HS Series (for critical backup): Fast backup for essential loads, can be combined modularly for medium systems.

Conclusion

In comparison with Growatt VS Solax Battery, it can be seen that both types of batteries have their pros and cons. Growatt batteries are budget-friendly, but their warranty is difficult to understand and off-grid benefits are limited. SolaX batteries work easily, provide fast backup and are reliable to use due to their 10-year warranty. This solar battery comparison helps you understand which battery suits your home’s daily needs. LiFePO4 batteries store energy in the home and help keep the lights on for a long time. Small modules can be combined to create modular solar storage, which can be gradually increased. This LiFePO4 home battery solution is easy and safe for the home.

FAQs

Can Growatt batteries be used off-grid?

No, not all Growatt batteries work off-grid. Only the SPF 3000-5000 ES hybrid inverter can run the battery off-grid. It is limited and safe as a solar off-grid battery.

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.