Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Australia purchasing view
BYD | Battery-Box Premium LVL15.4 (2021); exact Australian low-voltage battery
61/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-30
Available in Australia · checked 2026-08-27
Buyer evidence: Ready (100% direct coverage).
AlphaESS | SMILE-G3-S5 with one SMILE-G3-BAT-10.1P; 9.6 kWh usable reference, 1-6 modules
67/ 100
Strong evidence coverage · 100%
Evidence checked 2026-09-01
Available in Australia · checked 2026-08-29
Buyer evidence: Ready (100% direct coverage).
| Measure | Battery-Box Premium LVL 15.4 | Smile G3 S5 / BAT-10.1P |
|---|---|---|
| Capacity & Usability | ||
| Power & Efficiency | ||
| Longevity (verified) | ||
| Safety & Chemistry | ||
| Guarantee & Backbone | ||
| Energy Ecosystem |
| Measure | Battery-Box Premium LVL 15.4 | Smile G3 S5 / BAT-10.1P |
|---|---|---|
| Architecture | DC-coupled battery | All-in-one energy system |
| Published usable capacity range | 15.36 kWh | 9.6–57.6 kWh |
| Chemistry | LFP | LFP |
| Power | 12.8 kW | 5 kW |
| Round-trip | 95 % | Not recorded |
| Cycle life | Not recorded | Not recorded |
| Scored benchmark | Not stated | 9.6 kWh |
| Evidence | Battery-Box Premium LVL 15.4 | Smile G3 S5 / BAT-10.1P |
|---|---|---|
| Outcome | Available in Australia | Available in Australia |
| Checked | 2026-08-27 | 2026-08-29 |
| Certifications | The current CER snapshot contains the renewed LVL15.4 row approved 22 July 2026 and expiring 31 December 2027; the older duplicate expired 19 July 2026. | The exact BAT-10.1P datasheet lists IEC 62619, IEC 63056, IEC 62040 and UN 38.3; the SMILE-G3-S5 AU system datasheet lists AS 4777.2 and IEC 62109. |
| Warranty scope | Australia residential systems below 50 kWh combined usable energy; ten years, 60% retention or 47.46 MWh for LVL15.4, whichever limit occurs first. | Australia; the 11 October 2024 warranty names SMILE-G3-S5 and BAT-10.1P with a ten-year term, 70% retained capacity and a 3.12 MWh/kWh throughput condition for eligible installations from 1 November 2024. |
| Warranty remedy | BYD may repair, replace or provide a partial refund. | Repair or replacement at AlphaESS's option. |
| Labour and reinstallation | Unconditional site labour and travel reimbursement are not promised. Removal and reinstallation are not promised. | Installer travel and on-site labour are excluded. Removal and reinstallation are not promised. |
| Freight | Return and testing costs depend on the claim and expert-determination outcome. | Replacement-parts freight is covered for an accepted claim. |
| Transfer and registration | Coverage extends to a subsequent owner who acquires the product for their own use and provides proof of ownership. The claim requires installation, invoice, serial, firmware, inverter and operating information. | The warranty is non-transferable except where the products remain installed in a building, in which case it transfers to a later purchaser of that building. Serial registration before a claim, and installation by an SAA-accredited installer with a valid Alpha Installer ID, are required. |
| Grid/network approval evidence | The exact battery identity appears in the current Australian battery export. Inverter selection, DNSP acceptance and system design remain separate installation decisions. | The exact AU system is a 5 kW, 230 V single-phase hybrid under AS 4777.2. Current project approval and installer eligibility remain 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 | This is the low-voltage LVL identity, separate from the existing HVS, HVM and LVS records. Systems above 50 kWh move to separate commercial warranty terms. | AlphaESS's current 2026 Australian brochure lists SMILE-G3-S5/B5 with both BAT-10.1P and BAT-9.3S. The battery options coexist; neither is presented as the formal successor to the other. |
| Register: parts term | Not in the structured register | Not in the structured register |
| Register: labour and service | Not in the structured register | Not in the structured register |
| Register: transport and freight | Not in the structured register | Not in the structured register |
| Register: registration | Not in the structured register | Not in the structured register |
| Register: transferability | Not in the structured register | Not in the structured register |
| Register: explicit unknowns | Not in the structured register | Not in the structured register |
| Latest reviewed Approval Watch event | No exact-identity event in reviewed history | No exact-identity event in reviewed history |
| Sources | Source 1Source 2Source 3Source 4Source 5 | Source 1Source 2Source 3Source 4Source 5Source 6 |
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.