Performance & Value
Smile G3 S5 BAT-9.3S
AlphaESS
62/ 100
Strong evidence coverage · 100%
Evidence checked 2026-07-16
Available in Australia · checked 2026-07-16
Buyer evidence: Ready (100% direct coverage).
LFP100% Usable
Full scorecard Score profile
| Measure | Smile G3 S5 BAT-9.3S | Battery-Box Premium HVS |
|---|---|---|
| Capacity & Usability | ||
| Power & Efficiency | ||
| Longevity (verified) | ||
| Safety & Chemistry | ||
| Guarantee & Backbone | ||
| Energy Ecosystem |
Capacity & Usability
- Smile G3 S5 BAT-9.3S
88 / 100 - Battery-Box Premium HVS
92 / 100
Power & Efficiency
- Smile G3 S5 BAT-9.3S
69 / 100 - Battery-Box Premium HVS
91 / 100
Longevity (verified)
- Smile G3 S5 BAT-9.3S
60 / 100 - Battery-Box Premium HVS
59 / 100
Safety & Chemistry
- Smile G3 S5 BAT-9.3S
69 / 100 - Battery-Box Premium HVS
73 / 100
Guarantee & Backbone
- Smile G3 S5 BAT-9.3S
43 / 100 - Battery-Box Premium HVS
92 / 100
Energy Ecosystem
- Smile G3 S5 BAT-9.3S
45 / 100 - Battery-Box Premium HVS
57 / 100
Key specifications
| Measure | Smile G3 S5 BAT-9.3S | Battery-Box Premium HVS |
|---|---|---|
| Published usable capacity range | 9.3–37.2 kWh | 5.12–12.8 kWh |
| Scored benchmark | 9.3 kWh | 10.24 kWh |
| Chemistry | LFP | LFP |
| Power | 5 kW | 10.2 kW |
| Round-trip | Not recorded | 96 % |
| Cycle life | Not recorded | Not recorded |
Published usable capacity range
- Smile G3 S5 BAT-9.3S
- 9.3–37.2 kWh
- Battery-Box Premium HVS
- 5.12–12.8 kWh
Scored benchmark
- Smile G3 S5 BAT-9.3S
- 9.3 kWh
- Battery-Box Premium HVS
- 10.24 kWh
Chemistry
- Smile G3 S5 BAT-9.3S
- LFP
- Battery-Box Premium HVS
- LFP
Power
- Smile G3 S5 BAT-9.3S
- 5 kW
- Battery-Box Premium HVS
- 10.2 kW
Round-trip
- Smile G3 S5 BAT-9.3S
- Not recorded
- Battery-Box Premium HVS
- 96 %
Cycle life
- Smile G3 S5 BAT-9.3S
- Not recorded
- Battery-Box Premium HVS
- Not recorded
Australia evidence
| Evidence | Smile G3 S5 BAT-9.3S | Battery-Box Premium HVS |
|---|---|---|
| Outcome | Available in Australia | Available in Australia |
| Checked | 2026-07-16 | 2026-07-16 |
| Certifications | The exact Australian SMILE-G3-S5/B5 + BAT-9.3S datasheet lists AS/NZS 4777.2 grid regulation, IEC 62109 and IEC 62040 safety standards, IEC 61000 EMC, and IEC 62619 for the battery module. | BYD's HVS/HVM Australia datasheet names HVS 10.2 and lists VDE2510-50, IEC 62619, CEC, CE and UN 38.3. |
| Warranty scope | The exact Australian datasheet lists a 10-year product warranty and 10-year battery-performance warranty for SMILE-G3-S5/B5 with BAT-9.3S. Alpha ESS Australia's current residential warranty terms name the SMILE-G3-S5 system, apply to installations from 1 November 2024, and are additional to Australian Consumer Law rights. | Australia; the HVS 10.2 is named in BYD's Australian HVS/HVM limited warranty, with a 10-year product warranty subject to its terms. |
| Grid compatibility | The exact S5 inverter configuration is a 230 V single-phase hybrid system with a 5 kVA backup port, integrated anti-islanding and AS/NZS 4777.2 grid regulation. Final DNSP approval remains installation-specific. | The Australian HVS/HVM datasheet identifies on-grid, on-grid plus backup and off-grid applications, and requires a compatible inverter from BYD's current HVS/HVM compatible-inverter list. Final inverter listing and DNSP approval remain site-specific. |
| Buyer evidence | Ready (100% direct coverage): Local availability, buyer evidence, and the publication threshold are confirmed. | Ready (62% 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 current 9.3 kWh module configuration documented in AlphaESS Australia's April 2026 resource-centre material. It is distinct from the historical BAT-10.1P record retained elsewhere in the benchmark. | BYD's Australian download centre publishes the HVS/HVM AU datasheet, installation manual, and warranty material. |
| Sources | Source 1Source 2Source 3Source 4 | Source 1Source 2Source 3 |
Outcome
- Smile G3 S5 BAT-9.3S
- Available in Australia
- Battery-Box Premium HVS
- Available in Australia
Checked
- Smile G3 S5 BAT-9.3S
- 2026-07-16
- Battery-Box Premium HVS
- 2026-07-16
Certifications
- Smile G3 S5 BAT-9.3S
- The exact Australian SMILE-G3-S5/B5 + BAT-9.3S datasheet lists AS/NZS 4777.2 grid regulation, IEC 62109 and IEC 62040 safety standards, IEC 61000 EMC, and IEC 62619 for the battery module.
- Battery-Box Premium HVS
- BYD's HVS/HVM Australia datasheet names HVS 10.2 and lists VDE2510-50, IEC 62619, CEC, CE and UN 38.3.
Warranty scope
- Smile G3 S5 BAT-9.3S
- The exact Australian datasheet lists a 10-year product warranty and 10-year battery-performance warranty for SMILE-G3-S5/B5 with BAT-9.3S. Alpha ESS Australia's current residential warranty terms name the SMILE-G3-S5 system, apply to installations from 1 November 2024, and are additional to Australian Consumer Law rights.
- Battery-Box Premium HVS
- Australia; the HVS 10.2 is named in BYD's Australian HVS/HVM limited warranty, with a 10-year product warranty subject to its terms.
Grid compatibility
- Smile G3 S5 BAT-9.3S
- The exact S5 inverter configuration is a 230 V single-phase hybrid system with a 5 kVA backup port, integrated anti-islanding and AS/NZS 4777.2 grid regulation. Final DNSP approval remains installation-specific.
- Battery-Box Premium HVS
- The Australian HVS/HVM datasheet identifies on-grid, on-grid plus backup and off-grid applications, and requires a compatible inverter from BYD's current HVS/HVM compatible-inverter list. Final inverter listing and DNSP approval remain site-specific.
Buyer evidence
- Smile G3 S5 BAT-9.3S
- Ready (100% direct coverage): Local availability, buyer evidence, and the publication threshold are confirmed.
- Battery-Box Premium HVS
- Ready (62% direct coverage): Local availability, buyer evidence, and the publication threshold are confirmed.
Safety notice
- Smile G3 S5 BAT-9.3S
- No model-specific notice recorded
- Battery-Box Premium HVS
- No model-specific notice recorded
Review note
- Smile G3 S5 BAT-9.3S
- This is the current 9.3 kWh module configuration documented in AlphaESS Australia's April 2026 resource-centre material. It is distinct from the historical BAT-10.1P record retained elsewhere in the benchmark.
- Battery-Box Premium HVS
- BYD's Australian download centre publishes the HVS/HVM AU datasheet, installation manual, and warranty material.
Sources
Australia purchase checks
Make the shortlist quote-ready
These checks sit beside the benchmark score. They are site, tariff and contract questions that no product score can settle.
- Lock the exact model and installation-date listing.
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.
- Obtain the site-specific connection settings.
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.
- Test savings against the household, not a brochure.
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.
- Specify the operating outcome.
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.
- Name the party responsible after installation.
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.
Where the comparison separates
OverallBattery-Box Premium HVS leads the global score by 13 points.
Strongest dimensionsSmile G3 S5 BAT-9.3S: Capacity & Usability · Battery-Box Premium HVS: Capacity & Usability
Largest differenceBattery-Box Premium HVS has the largest pillar edge in Guarantee & Backbone (49 points).
Market evidenceSmile G3 S5 BAT-9.3S: buyer ready · Battery-Box Premium HVS: buyer ready
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.