Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Australia purchasing view
Redback Technologies | RED-P1-BE21HV; 21 kWh nominal, 19.95 kWh usable, paired RED-H3-S10HV single-phase hybrid inverter
64/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-10
Available in Australia · checked 2026-08-10
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 | Hybrid Battery Max BE21HV | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Capacity & Usability | ||
| Power & Efficiency | ||
| Longevity (verified) | ||
| Safety & Chemistry | ||
| Guarantee & Backbone | ||
| Energy Ecosystem |
| Measure | Hybrid Battery Max BE21HV | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Architecture | DC-coupled battery | DC-coupled battery |
| Published usable capacity range | 13.3–33.25 kWh | 9.3–37.2 kWh |
| Scored benchmark | 19.95 kWh | 9.3 kWh |
| Chemistry | LFP | LFP |
| Power | 9.99 kW | 5 kW |
| Round-trip | Not recorded | Not recorded |
| Cycle life | Not recorded | Not recorded |
| Evidence | Hybrid Battery Max BE21HV | Smile G3 S5 BAT-9.3S |
|---|---|---|
| Outcome | Available in Australia | Available in Australia |
| Checked | 2026-08-10 | 2026-08-02 |
| Certifications | Clean Energy Council approved battery, certificate BAT-927, approved 27 March 2026, covering RED-P1-BE14HV, BE21HV, BE28HV and BE35HV, listed to Redback Energy Pty Ltd, expiry 31 December 2027., The paired RED-H3-S05/S06/S08/S10HV single-phase inverters are CEC-approved under AZ 69028712, approved 26 February 2026, citing AS/NZS 4777.2:2020 Amd 2:2024. | 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; Redback Energy Pty Ltd provides ten years while a stable cloud connection is maintained and five years without monitoring. Battery performance is 70% retained usable capacity with 3.65 MWh per kWh usable, and the product warranty is transferable only at the original site after new-owner registration. | 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, either onsite by a Redback or qualified technician or offsite at an authorised facility. | Repair or replacement at AlphaESS's option. |
| Labour and reinstallation | Onsite or offsite repair labour is included in the stated remedy for an accepted claim; rejected claims may be invoiced. Relocation without prior written approval invalidates the warranty. | Installer travel and on-site labour are excluded. Removal and reinstallation are not promised. |
| Freight | Transport damage is excluded and unconditional freight reimbursement is not separately promised. | Replacement-parts freight is covered for an accepted claim. |
| Transfer and registration | Transfers at the original installation after the new owner registers with Redback; relocation requires prior written approval. Internet monitoring is required for ten years; without it the term is five years. | 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 230 V system listed against AS/NZS 4777.2:2020 Amd 2:2024. Redback publishes dynamic-export commissioning guides for SA Power Networks, Energy Queensland and the Victorian emergency backstop. Final network and installer approval remain project-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 | This record covers the single-phase Hybrid Battery Max reference configuration: RED-P1-BE21HV with a RED-H3-S10HV inverter. The three-phase RED-H3-T series and the separate G3 system are distinct product identities. Note that the RED-P1-7000HV module named in the current battery warranty does not itself appear on either CEC list; only the BExxHV enclosures do. | The exact 9.3 kWh battery module and supported stacks are current Australian approved-battery entries. |
| Register: parts term | stated: Ten years from installation or eleven years from manufacture, whichever occurs first. External network adapters and meters are limited to two years. | stated: Ten-year product warranty for the named SMILE-G3-S5 system when installed on or after 1 November 2024. |
| Register: labour and service | conditional: Redback may provide onsite or offsite repair or replacement for an accepted claim. Rejected claims may be invoiced and no unrestricted third-party labour reimbursement is promised. | 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: Transport damage is excluded, but the instruments do not state an unconditional customer freight entitlement. | 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: A stable cloud connection is required for the ten-year module term; without monitoring the stated module term is five years. | 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 | conditional: Transfer is available at the original installation after new-owner registration. Relocation requires prior written approval. | 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 | 3 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 4Source 5Source 6Source 7Source 8 | 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.