Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Australia purchasing view
BYD | LVS 4.0 / 8.0 / 12.0 / 16.0 / 20.0 / 24.0; scored reference LVS 12.0
70/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-06
Available in Australia · checked 2026-08-06
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 | Battery-Box Premium LVS | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Capacity & Usability | ||
| Power & Efficiency | ||
| Longevity (verified) | ||
| Safety & Chemistry | ||
| Guarantee & Backbone | ||
| Energy Ecosystem |
| Measure | Battery-Box Premium LVS | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Architecture | DC-coupled battery | DC-coupled battery |
| Published usable capacity range | 4–24 kWh | 9.3–37.2 kWh |
| Scored benchmark | 12 kWh | 9.3 kWh |
| Chemistry | LFP | LFP |
| Power | 10.0 kW | 5 kW |
| Round-trip | 95 % | Not recorded |
| Cycle life | Not recorded | Not recorded |
| Evidence | Battery-Box Premium LVS | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Outcome | Available in Australia | Available in Australia |
| Checked | 2026-08-06 | 2026-08-02 |
| Certifications | The 29 July 2026 regulator export lists LVS 4.0 through LVS 24.0 with current approval through 7 December 2026. | 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; Shenzhen BYD Electronic Co., Ltd provides ten-year product cover and 60% retained usable energy until 35.64 MWh for LVS 12.0, whichever comes first. Cover extends to a subsequent owner who provides proof of ownership. | 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, replacement or a partial refund at BYD's option. | Repair or replacement at AlphaESS's option. |
| Labour and reinstallation | Installation labour is not promised. Removal and reinstallation are not promised. | Installer travel and on-site labour are excluded. Removal and reinstallation are not promised. |
| Freight | Ordinary claim freight is not an unconditional entitlement. | Replacement-parts freight is covered for an accepted claim. |
| Transfer and registration | Transfers to a subsequent owner who acquires the product for their own use and provides proof of ownership. Invoice and mandatory product, inverter and installation details are required; defects must be notified within 30 days of awareness. | 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 | BYD publishes an Australian LVS inverter-compatibility statement. The stored reciprocal path is limited to the exact reviewed Solis S6-EH1P6K-L-PLUS-AU record; final design and DNSP requirements remain site-specific. | 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 | LVS is a DC battery with no AC transfer device. The manual says it supports external one- and three-phase inverter applications and that internet access is not compulsory; exact backup scope and switching remain inverter-defined. | The exact 9.3 kWh battery module and supported stacks are current Australian approved-battery entries. |
| Register: parts term | stated: Ten-year product warranty for the named residential LVS configurations. | 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 stated: BYD may repair, replace or partially refund at no charge, but the instrument does not promise general installer labour, travel, removal or reinstallation reimbursement. | 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 stated: No general owner freight entitlement is stated. Expert-testing shipping is paid by the claimant if the stated dispute conditions are met and the expert decides for BYD; BYD pays in the other stated cases. | 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 | conditional: No separate pre-registration condition is stated. A claim requires invoice and exact installation, battery, inverter and firmware details, and the owner must grant requested internet access to performance data after reporting a claim. | 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 | stated: The warranty covers the original buyer and a subsequent owner who acquires the product for their own use and provides proof of ownership. | 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 | 4 retained | 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 3Source 4 | 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.