The short answer
The best battery is the one that fits your home
There is no single best solar battery for every home. The right choice depends on your existing solar equipment, when you use electricity, your home’s electrical supply, what you want powered during a blackout, the available space, your budget and the support behind the product.
We compare two GoodWe battery ranges here. The Lynx F G2 is built from stackable battery units and works with compatible GoodWe inverters. The GoodWe 8.3 kWh BAT is made for GoodWe’s combined inverter and battery system, called ESA. The practical differences are how the storage grows, which equipment each battery works with and how the complete system is designed for your home.
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GoodWe battery ranges compared
The most important differences are how much electricity each battery can store and deliver, whether it works with the home’s existing solar equipment and what is required for blackout backup.
Each comparison point shows both battery ranges, one after the other.
| Comparison point | GoodWe Lynx F G2 | GoodWe 8.3 kWh BAT / ESA |
|---|---|---|
| How the system is built | Stackable battery modules connected to a compatible GoodWe hybrid inverter. | 8.3 kWh battery modules designed as part of GoodWe’s ESA inverter and battery system. |
| Storage available to use | Storage grows by adding 3.2 kWh battery units, within the limits of the compatible inverter and battery system. | Each 8.32 kWh module provides 8.0 kWh of usable storage. More modules can be added where the selected system supports them. |
| How much power it can deliver | The published battery rating ranges from 11.2 to 20.16 kW, depending on stack size. The inverter and home electrical system may set a lower limit. | Up to 8.0 kW per battery module, with a short 12 kW peak. The ESA power module and home electrical system may set a lower limit. |
| Battery type | LFP, a type of lithium-ion battery. | LFP, a type of lithium-ion battery. |
| Household electricity supply | Can suit single-phase or three-phase homes when paired with the correct compatible GoodWe inverter. | ESA systems are available for single-phase and three-phase homes. The correct ESA power module must be selected. |
| Adding it to existing solar | May suit a home that already has a compatible GoodWe hybrid inverter. Every existing system needs a model-specific compatibility check. | Primarily designed as a coordinated new or replacement system. An AC-coupled ESA model may suit some existing single-phase solar systems after assessment. |
| Blackout backup | Possible only when the design includes a compatible inverter, selected backup circuits, any required switchboard work and the correct settings. | Possible only when the ESA design includes the correct equipment, selected backup circuits, any required switchboard work and the correct settings. |
| Where it can be installed | Ground-mounted battery enclosure with an IP55 rating. The final location and clearances must meet the installation requirements. | IP66-rated battery enclosure. Wall, floor or ground mounting is available in approved configurations. |
| Monitoring | Performance and energy use can be viewed through the compatible GoodWe inverter and monitoring app. | Performance and energy use can be viewed through the GoodWe ESA monitoring system and app. |
| Warranty | Published 10-year product and performance warranties. Cover depends on conditions such as correct installation, compatible equipment, total energy use and remaining battery capacity. | Published 10-year product and performance warranties. Performance cover is subject to 70% remaining capacity or total energy-use limits, as well as the stated installation and operating conditions. |
| What the difference may mean | Homes that need a larger, expandable battery and have, or plan to install, a compatible GoodWe inverter. | Homes that would benefit from a coordinated GoodWe inverter and battery system, with storage added in 8.0 kWh usable steps. |
Important: a battery’s published power is not automatically the power available to your home. The inverter, your home’s electricity supply, the circuits connected for backup, how full the battery is and the extra power some appliances need when starting can all set a lower limit.
Battery options
The GoodWe battery ranges in this guide
Expandable battery system
GoodWe Lynx F G2
The Lynx F G2 is built from 3.2 kWh battery units. Adding units increases the available storage, within the limits of the compatible inverter and battery system. The right number depends on your electricity use, available solar energy and what you want the battery to do.
The battery works with selected GoodWe hybrid inverters for single-phase and three-phase homes. It may be an option when a compatible GoodWe inverter is already installed or when solar and storage are designed together. We still need to check the exact inverter model because the supported battery size varies.
The IP55 enclosure is installed on the ground in a suitable location. Adding battery units can increase the published battery power, but the inverter, your electricity supply, the circuits connected for backup and the appliances using power can still set a lower limit. More storage does not automatically mean more appliances can run together.
Coordinated battery and inverter system
GoodWe 8.3 kWh BAT with ESA
Each BAT-D-G20/G21 module provides 8.0 kWh of usable storage from 8.32 kWh of rated capacity. It is designed to work with GoodWe ESA power modules in both single-phase and three-phase systems.
The ESA brings the inverter, battery, monitoring and backup controls into one coordinated system. GoodWe also offers an Australian single-phase version that connects on the household side of some existing solar systems. Whether it suits your home still depends on the switchboard, electricity supply, existing inverter and complete design.
The battery enclosure is rated IP66, with wall, floor or ground mounting available in supported configurations. Additional modules can expand capacity, subject to the limits of the selected power module and the current installation requirements.
How to choose the right battery for your home
Start with what you want the battery to do. Once we understand your priorities, we can compare storage, power and compatible equipment on the same basis.
- Understand when you use electricity.Bills show the total. Your smart meter can provide a more detailed history, often in 15- or 30-minute blocks, showing evening use, overnight use and how much extra solar may be available for charging.
- Choose what needs power in a blackout.A backup plan should name the circuits and appliances to be connected, how much power is available and how long it may last under stated assumptions.
- Record your existing equipment.The inverter model, whether your home has single-phase or three-phase power, the system’s age, the switchboard and its connection settings all affect compatibility.
- Compare storage and power separately.Usable kWh tells you how much energy is available over time. kW tells you how much can be supplied at once, subject to the inverter and connected circuits.
- Confirm a suitable location.We need to allow for the wall or ground surface, safe access, required space around the battery, weather protection, temperature and electrical safety rules.
- Read beyond the warranty headline.Check how much capacity must remain, how much total energy use is covered, any limit on charging cycles, compatible equipment, setup and internet requirements, exclusions and Australian support.
The right approach for different homes
Adding a battery to existing solar
Your inverter, electricity supply, switchboard, solar panels and usage history shape the options. Some compatible hybrid inverters can connect directly to a battery. Other homes may need a battery that connects on the household side of the system, or may need equipment replaced. Your quote should make that work and cost clear.
Planning solar and battery together
Planning the panels, inverter, battery, monitoring, grid export settings and backup circuits together gives us more freedom to make the parts work as one system. The choice between an ESA system and a Lynx battery with a compatible inverter depends on your electricity supply, power needs, required storage, roof and future plans.
Prioritising evening energy use
Your smart-meter history can show the electricity you regularly use after the panels stop generating. We compare that evening demand with the extra solar available during the day instead of simply choosing the largest battery within budget. The battery-sizing guide explains this in more detail.
Prioritising blackout backup
A backup design begins with the parts of the home you want to keep running, how long you want support and appliances such as pumps that need a burst of power to start. Storage is only one part of the answer. The inverter, short-term power limit, reserved charge, electricity supply and any solar generated during the outage also matter.
When a battery may not be worthwhile
A battery may be difficult to justify where evening use is low, daytime solar surplus is limited, no suitable installation location is available or substantial switchboard and inverter work is required. The household’s likely time in the property also matters. These considerations are explored in Is a solar battery worth it?
Capacity and power describe different things
Total stated storage
This is the battery’s full stated energy capacity, measured in kilowatt-hours (kWh).
Storage you can use
This is the portion available in normal operation and the more useful figure for comparison. The GoodWe BAT unit is rated at 8.32 kWh and provides 8.0 kWh of usable storage. The Lynx F G2 figures in this guide are usable storage.
Power available continuously
This is how much power the system can keep supplying, measured in kilowatts (kW). The battery, inverter, your home’s electricity supply and the connected circuits can each set a lower limit.
A short burst of extra power
This higher output is available briefly, often to help an appliance start. It is not the same as continuous power and does not mean every appliance can run during a blackout.
A useful way to picture it: kWh is the size of a water tank, while kW is how quickly water can leave the tap. A large tank may last longer, but a narrow outlet still limits the flow at any one moment.
Reliable backup depends on the complete system
Solar connected to the grid normally switches off during a blackout for safety. To keep part of the home running, the battery system needs compatible equipment, a safe way to disconnect from the grid, the required switchboard work, correct settings and nominated backup circuits.
Choose what is included
Backing up the whole home, selected essential circuits or one dedicated outlet are different designs. Your written scope should say whether lights, refrigeration, internet, heating and cooling, pumps, cooking and electric vehicle charging are included.
Confirm what can run together
The design should state the power available continuously, any brief extra output, limits for each phase of the home and whether appliances that need extra starting power have been assessed.
Estimate how long it may last
Backup time depends on how full the battery is, how much charge is held in reserve, what the home is using and whether the panels can recharge it during the outage. Any estimate should state those assumptions.
Test the finished system
Before handover, the installer should test the backup circuits and the switch from grid power to battery power, then explain how you can check the system safely.
What a battery warranty should explain
A 10-year headline can cover different things. GoodWe publishes separate product and performance warranty terms for these battery families, and the conditions vary by model. Your proposal should include the exact warranty document for each component.
- What is the product warranty, and what parts, labour, travel or freight are included or excluded?
- How much usable storage must the battery still provide at the end of the performance period?
- Can the performance cover end earlier after a set number of charge cycles or a set amount of total energy use?
- Must the battery use a nominated inverter, software version, internet connection or monitoring service?
- Are there limits on daily cycling, operating temperature, installation location or adding modules later?
- Who is the Australian supplier, who receives the first service call, and what evidence is needed for a claim?
- Are the battery, inverter, backup equipment and installation workmanship covered by separate written terms?
Manufacturer warranties sit alongside rights under the Australian Consumer Law. The ACCC notes that the seller cannot direct a consumer away from their consumer-guarantee rights simply because a manufacturer warranty exists.
What we check before the firm quote
Free phone consultation
We discuss your recent bills, detailed smart-meter history if available, existing solar equipment, electricity use, battery goals, blackout priorities and future electrical needs.
Estimate after the call
We prepare an estimate from the available information, giving you an early view of the likely work before we confirm the site conditions.
Site visit
Our in-house team checks the proposed location, wall or ground surface, access, cable path, switchboard, electricity supply, existing equipment, circuits and safety requirements.
Firm written quote
After the visit, we provide a firm written quote with the exact models, usable storage, inverter and electricity-supply details, backup scope, exclusions, monitoring and applicable warranty documents.
Battery installation is prescribed electrical work in Victoria and requires appropriately licensed electrical workers and inspection. Product approval and trained installation are also relevant to current federal scheme requirements.
Frequently asked questions
What is the best solar battery in Australia?
There is no universal winner. The right battery balances usable storage, power, compatibility with your inverter and electricity supply, blackout needs, placement, monitoring, warranty conditions, budget and local support. The GoodWe Lynx F G2 and GoodWe BAT with ESA take different approaches, and the suitable option still depends on your home.
Can I add a GoodWe battery to my existing inverter?
Only if the exact battery and inverter models, software version, electricity supply and connection arrangement are compatible. Some homes need a different inverter, a battery that connects on the household side of the system or broader equipment replacement. We check the model numbers and switchboard before treating the addition as practical.
Will a solar battery power my whole house in a blackout?
Not automatically. Some systems back up only selected circuits, while others can support more of the home within their limits. The inverter, electricity supply, connected circuits, how full the battery is, the power appliances need to start and any solar available during the outage all affect what can run and for how long.
Is a bigger battery always better?
No. Extra storage may go unused when your evening demand or extra daytime solar is limited. A larger battery can also cost more without increasing how much power the inverter can supply at once. We size it using your detailed usage history, future needs and realistic blackout assumptions.
What is the difference between kWh and kW?
kWh measures how much energy is stored for later, so it helps indicate duration. kW measures how much power can be supplied at once, so it affects which appliances can run together. Both figures matter.
How long is the warranty on the current GoodWe options?
The Australian warranty documents checked for this guide state 10-year product and performance periods for the Lynx F G2 and BAT-D-G20/G21 families. Conditions apply to how much storage remains, total energy used, compatible equipment, correct setup and operation. Your proposal should include the exact warranty document for every quoted model.
Product information and official sources
Check the product details behind this guide
Product information was checked on 9 September 2026. This guide focuses on the GoodWe Lynx F G2 and GoodWe BAT with ESA so you can understand two different battery-system approaches. It does not name an overall winner because suitability depends on the complete design for your home.
The specifications come from the manufacturer documents linked below. Use them to check the exact figures, compatibility and warranty terms for the equipment in your quote. Product documents and compatibility lists can change, so current revisions must be confirmed when equipment is quoted.
The images are illustrative and do not depict a particular customer installation or manufacturer model.
Official sources checked 9 September 2026
- GoodWe Lynx F G2 Australian product page
- GoodWe Lynx F G2 Australian datasheet, V2.1 20260630
- GoodWe Lynx F G2 Australia and New Zealand warranty, Rev 1.4 20241101
- GoodWe ESA 3–10 kW single-phase product page and ESA 5–30 kW three-phase product page
- GoodWe ESA three-phase datasheet, V2.1 20260616
- GoodWe ESA single-phase AC-coupled Australian datasheet
- GoodWe BAT-D-G20/G21 Australia and New Zealand warranty, Rev 1.0 20250725
- Australian Government Solar Consumer Guide: batteries
- Clean Energy Regulator: solar batteries
- Energy Safe Victoria: battery storage systems and electrical installation FAQ
- ACCC: solar panel systems and home batteries
Product documents, compatible-equipment lists and safety requirements can change. Current model documents and the property-specific design should always be confirmed before proceeding.
Related SEN guides
Continue your research
Find the right battery for your home
For a free phone consultation, bring recent electricity bills and details of any existing solar equipment. We will also ask about when you use power and what matters during a blackout.
Or email info@senaustralia.com. We are based in Tullamarine. Please contact us before visiting the office.
