Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Australia purchasing view
Growatt | APX 5.0P-S2 AU / 10.0P-S2 AU / 15.0P-S2 AU / 20.0P-S2 AU / 25.0P-S2 AU / 30.0P-S2 AU; scored reference APX 10.0P-S2 AU
60/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-02
Available in Australia · checked 2026-08-02
Buyer evidence: Ready (100% direct coverage).
AlphaESS | SMILE-G3-S5-INV with SMILE-G3-BAT-9.3S
62/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-02
Available in Australia · checked 2026-08-02
Buyer evidence: Ready (100% direct coverage).
| Measure | APX HV S2 | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Capacity & Usability | ||
| Power & Efficiency | ||
| Longevity (verified) | ||
| Safety & Chemistry | ||
| Guarantee & Backbone | ||
| Energy Ecosystem |
| Measure | APX HV S2 | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Architecture | DC-coupled battery | DC-coupled battery |
| Published usable capacity range | 5–30 kWh | 9.3–37.2 kWh |
| Scored benchmark | 10 kWh | 9.3 kWh |
| Chemistry | LFP | LFP |
| Power | 5.0 kW | 5 kW |
| Round-trip | Not recorded | Not recorded |
| Cycle life | Not recorded | Not recorded |
| Evidence | APX HV S2 | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Outcome | Available in Australia | Available in Australia |
| Checked | 2026-08-02 | 2026-08-02 |
| Certifications | The exact Australian S2 datasheet publishes IEC 62619, IEC 62040, CE, RCM and UN 38.3 compliance. | The current Australian approved-battery export lists SMILE-G3-BAT-9.3S and stacks through six modules to 31 December 2027; the exact system datasheet publishes IEC 62619 and AS/NZS 4777.2. |
| Warranty scope | Australia; the APX warranty publishes a 10-year non-transferable term, with 70% retained capacity for the first five years and 50% through year 10, subject to operating and monitoring conditions. | The exact Australian datasheet publishes 10-year product and battery-performance warranties, governed by current AlphaESS Australia terms and Australian Consumer Law. |
| Warranty remedy | Repair or replacement hardware at Growatt's option. | Repair or replacement at AlphaESS's option. |
| Labour and reinstallation | Labour and compensation are excluded. Removal and reinstallation are excluded. | Installer travel and on-site labour are excluded. Removal and reinstallation are not promised. |
| Freight | Logistics costs are excluded. | Replacement-parts freight is covered for an accepted claim. |
| Transfer and registration | The governing Australian warranty states that it is non-transferable. Operating and monitoring conditions apply. | Transfers automatically with the building while the system remains installed; ownership evidence may be required. Initial serial registration and eligible installation are required. |
| Grid compatibility | High-voltage DC battery for compatible Growatt three-phase hybrid inverters; backup performance depends on the paired inverter. | The exact S5 configuration is a 230 V single-phase hybrid system with 5 kVA backup and AS/NZS 4777.2 grid regulation; final DNSP approval remains installation-specific. |
| Local product pathway | No separate local pathway recorded | No separate local pathway recorded |
| Buyer evidence | Ready (100% direct coverage): Local availability, buyer evidence, and the publication threshold are confirmed. | Ready (100% direct coverage): Local availability, buyer evidence, and the publication threshold are confirmed. |
| Safety notice | No model-specific notice recorded | No model-specific notice recorded |
| Review note | Growatt Australia publishes the exact APX HV S2 AU series. | The exact 9.3 kWh battery module and supported stacks are current Australian approved-battery entries. |
| Register: parts term | Not in the structured register | stated: Ten-year product warranty for the named SMILE-G3-S5 system when installed on or after 1 November 2024. |
| Register: labour and service | Not in the structured register | excluded: Normal maintenance, installer costs, travel and accommodation for on-site support are excluded. No general site-labour reimbursement is promised. |
| Register: transport and freight | Not in the structured register | conditional: Replacement parts and freight are included for valid claims, but other transport, travel and accommodation costs are excluded and reimbursement requires documentary evidence. |
| Register: registration | Not in the structured register | conditional: Installation requires an SAA-accredited installer with a valid Alpha Installer ID, and the serial number must be registered before a warranty claim. |
| Register: transferability | Not in the structured register | stated: The warranty transfers to a subsequent purchaser of the building or products while the products remain installed and all warranty conditions continue to be met. |
| Register: explicit unknowns | Not in the structured register | 3 retained |
| Latest reviewed Approval Watch event | No exact-identity event in reviewed history | No exact-identity event in reviewed history |
| Sources | Source 1Source 2Source 3 | Source 1Source 2Source 3 |
These checks sit beside the benchmark score. They are site, tariff and contract questions that no product score can settle.
Ask for every model number to appear on the quote and order. The Clean Energy Council product lists are live: STC creation requires listed products at installation, and network requirements may also depend on current approval.
Have the retailer state the supply phase, inverter connection limit, export limit and any export-control cost. The local network connection agreement, not a generic datasheet, determines those settings. See the Australian Government's connection guidance.
Ask which bills or interval data, tariff, feed-in rate, export limit and future loads support the savings and payback claim. Self-consumed electricity and tariff timing usually matter more than a headline feed-in rate. See the system sizing and battery savings guidance.
Define the usable energy, output power, backed-up circuits and outage behaviour. Confirm whether VPP participation, an internet connection, or an additional controller changes the configuration, reserve level, warranty or support path.
Keep the retailer, installer, manufacturer warranty and escalation path in the contract. Australian Consumer Law guarantees apply separately from any manufacturer warranty; where one business supplied both product and installation, it is generally responsible for the remedy. See the ACCC guidance.
A score lead is only meaningful inside this shared class or tier. Weigh it against the specification and evidence rows above before deciding.
Both products are scored in the Performance & Value class, on the same rubric weighting. Scores are not comparable across classes or tiers. Full methodology.