Performance & Value
Whispr 13.37
PowerPlus Energy
64/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-02
Available in Australia · checked 2026-08-02
Buyer evidence: Ready (100% direct coverage).
LFP5 kWh Modular
Full scorecard Score profile
| Measure | Whispr 13.37 | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Capacity & Usability | ||
| Power & Efficiency | ||
| Longevity (verified) | ||
| Safety & Chemistry | ||
| Guarantee & Backbone | ||
| Energy Ecosystem |
Capacity & Usability
- Whispr 13.37
85 / 100 - Smile G3 S5 BAT-9.3S
88 / 100
Power & Efficiency
- Whispr 13.37
62 / 100 - Smile G3 S5 BAT-9.3S
69 / 100
Longevity (verified)
- Whispr 13.37
60 / 100 - Smile G3 S5 BAT-9.3S
60 / 100
Safety & Chemistry
- Whispr 13.37
78 / 100 - Smile G3 S5 BAT-9.3S
69 / 100
Guarantee & Backbone
- Whispr 13.37
49 / 100 - Smile G3 S5 BAT-9.3S
43 / 100
Energy Ecosystem
- Whispr 13.37
52 / 100 - Smile G3 S5 BAT-9.3S
45 / 100
Key specifications
| Measure | Whispr 13.37 | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Published nominal capacity range | 13.37 kWh | Not stated |
| Chemistry | LFP | LFP |
| Power | 7.0 kW | 5 kW |
| Round-trip | Not recorded | Not recorded |
| Cycle life | Not recorded | Not recorded |
| Published usable capacity range | Not stated | 9.3–37.2 kWh |
| Scored benchmark | Not stated | 9.3 kWh |
Published nominal capacity range
- Whispr 13.37
- 13.37 kWh
- Smile G3 S5 BAT-9.3S
- Not stated
Chemistry
- Whispr 13.37
- LFP
- Smile G3 S5 BAT-9.3S
- LFP
Power
- Whispr 13.37
- 7.0 kW
- Smile G3 S5 BAT-9.3S
- 5 kW
Round-trip
- Whispr 13.37
- Not recorded
- Smile G3 S5 BAT-9.3S
- Not recorded
Cycle life
- Whispr 13.37
- Not recorded
- Smile G3 S5 BAT-9.3S
- Not recorded
Published usable capacity range
- Whispr 13.37
- Not stated
- Smile G3 S5 BAT-9.3S
- 9.3–37.2 kWh
Scored benchmark
- Whispr 13.37
- Not stated
- Smile G3 S5 BAT-9.3S
- 9.3 kWh
Australia evidence
| Evidence | Whispr 13.37 | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Outcome | Available in Australia | Available in Australia |
| Checked | 2026-08-02 | 2026-08-02 |
| Certifications | The exact datasheet publishes IEC 62619, IEC 62040, IEC 62109-1/-2 and AS 4777.2 plus CSIP-AUS. | 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 and New Zealand; 10 years on-site product cover, 70% usable capacity and 2.8 MWh throughput per kWh usable, subject to registration, connectivity and operating 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 | On-site repair or replacement for an accepted claim. | Repair or replacement at AlphaESS's option. |
| Labour and reinstallation | On-site service supports the parts-and-labour band. Complete removal and reinstallation cover is not separately promised. | Installer travel and on-site labour are excluded. Removal and reinstallation are not promised. |
| Freight | Freight is not separately promised as an owner entitlement. | Replacement-parts freight is covered for an accepted claim. |
| Transfer and registration | No subsequent-owner transfer right was found in the governing terms. Registration, connectivity and operating 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 | Single-phase hybrid all-in-one system with internal grid-to-backup switching and AS 4777.2 compliance. | 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. |
| System fit | No exact product pairing recorded | Confirmed: SMILE-G3-S5-INV with SMILE-G3-BAT-9.3S |
| 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 | PowerPlus Energy publishes the exact system specification, local claims process and Melbourne support contact. | The exact 9.3 kWh battery module and supported stacks are current Australian approved-battery entries. |
| Sources | Source 1Source 2Source 3 | Source 1Source 2Source 3 |
Outcome
- Whispr 13.37
- Available in Australia
- Smile G3 S5 BAT-9.3S
- Available in Australia
Checked
- Whispr 13.37
- 2026-08-02
- Smile G3 S5 BAT-9.3S
- 2026-08-02
Certifications
- Whispr 13.37
- The exact datasheet publishes IEC 62619, IEC 62040, IEC 62109-1/-2 and AS 4777.2 plus CSIP-AUS.
- Smile G3 S5 BAT-9.3S
- 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
- Whispr 13.37
- Australia and New Zealand; 10 years on-site product cover, 70% usable capacity and 2.8 MWh throughput per kWh usable, subject to registration, connectivity and operating conditions.
- Smile G3 S5 BAT-9.3S
- The exact Australian datasheet publishes 10-year product and battery-performance warranties, governed by current AlphaESS Australia terms and Australian Consumer Law.
Warranty remedy
- Whispr 13.37
- On-site repair or replacement for an accepted claim.
- Smile G3 S5 BAT-9.3S
- Repair or replacement at AlphaESS's option.
Labour and reinstallation
- Whispr 13.37
- On-site service supports the parts-and-labour band. Complete removal and reinstallation cover is not separately promised.
- Smile G3 S5 BAT-9.3S
- Installer travel and on-site labour are excluded. Removal and reinstallation are not promised.
Freight
- Whispr 13.37
- Freight is not separately promised as an owner entitlement.
- Smile G3 S5 BAT-9.3S
- Replacement-parts freight is covered for an accepted claim.
Transfer and registration
- Whispr 13.37
- No subsequent-owner transfer right was found in the governing terms. Registration, connectivity and operating conditions apply.
- Smile G3 S5 BAT-9.3S
- 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
- Whispr 13.37
- Single-phase hybrid all-in-one system with internal grid-to-backup switching and AS 4777.2 compliance.
- Smile G3 S5 BAT-9.3S
- 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.
System fit
- Whispr 13.37
- No exact product pairing recorded
- Smile G3 S5 BAT-9.3S
- Confirmed: SMILE-G3-S5-INV with SMILE-G3-BAT-9.3S
Local product pathway
- Whispr 13.37
- No separate local pathway recorded
- Smile G3 S5 BAT-9.3S
- No separate local pathway recorded
Buyer evidence
- Whispr 13.37
- Ready (100% direct coverage): Local availability, buyer evidence, and the publication threshold are confirmed.
- Smile G3 S5 BAT-9.3S
- Ready (100% direct coverage): Local availability, buyer evidence, and the publication threshold are confirmed.
Safety notice
- Whispr 13.37
- No model-specific notice recorded
- Smile G3 S5 BAT-9.3S
- No model-specific notice recorded
Review note
- Whispr 13.37
- PowerPlus Energy publishes the exact system specification, local claims process and Melbourne support contact.
- Smile G3 S5 BAT-9.3S
- The exact 9.3 kWh battery module and supported stacks are current Australian approved-battery entries.
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
OverallWhispr 13.37 leads the global score by 2 points.
Strongest dimensionsWhispr 13.37: Capacity & Usability · Smile G3 S5 BAT-9.3S: Capacity & Usability
Largest differenceWhispr 13.37 has the largest pillar edge in Safety & Chemistry (9 points).
Market evidenceWhispr 13.37: buyer ready · Smile G3 S5 BAT-9.3S: 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.