Compare like with like. Aligned scores, specifications and local evidence within one scoring class or tier.
Market context
Australia purchasing view
Tesla | Powerwall 3 Expansion part 1807000-xx-y; 13.5 kWh reference unit
58/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-30
Available in Australia · checked 2026-08-26
Buyer evidence: Ready (100% direct coverage).
Full scorecardEnphase | IQBATTERY-5P-3P-INT; 1P models 1.65 / 2.50 / 3.00 / 3.68 / 3.84; 3P models 1.84 / 2.50 / 3.00 / 3.68 / 3.84
68/ 100
Strong evidence coverage · 100%
Evidence checked 2026-08-30
Available in Australia · checked 2026-08-10
Buyer evidence: Ready (100% direct coverage).
| Measure | Powerwall 3 Expansion | IQ Battery 5P FlexPhase |
|---|---|---|
| Capacity & Usability | ||
| Power & Efficiency | ||
| Longevity (verified) | ||
| Safety & Chemistry | ||
| Guarantee & Backbone | ||
| Energy Ecosystem |
| Measure | Powerwall 3 Expansion | IQ Battery 5P FlexPhase |
|---|---|---|
| Architecture | DC-coupled battery | AC-coupled battery |
| Published nominal capacity range | 13.5 kWh | Not stated |
| Chemistry | Other | LFP |
| Power | Not recorded | Not recorded |
| Round-trip | Not recorded | 96 % |
| Cycle life | Not recorded | Not recorded |
| Published usable capacity range | Not stated | 5 kWh |
| Evidence | Powerwall 3 Expansion | IQ Battery 5P FlexPhase |
|---|---|---|
| Outcome | Available in Australia | Available in Australia |
| Checked | 2026-08-26 | 2026-08-10 |
| Certifications | The exact Expansion specification publishes IEC 62619, IEC 62933-5-2, IEC 61000-6-1:2016 and EN IEC 61000-6-3:2020., The current regulator snapshot lists Powerwall 3 configurations at 27, 40.5 and 54 kWh usable capacity through 31 December 2027. The Expansion accessory is not represented as a standalone grid-connected inverter. | The 29 July 2026 CER exports list ten exact FlexPhase power and phase identities through 31 December 2027., The exact AU/NZ datasheet lists AS/NZS 4777.2:2020 + A2, AS IEC 62040.1, EN IEC 62109-1/-2, AS IEC 62619, and UN 38.3, and states UL 9540A evaluation. |
| Warranty scope | Australia and New Zealand; warranty Rev 1.16 explicitly names Powerwall 3 Expansion part 1807000 for ten years and 70% of 13.5 kWh at year ten under the stated application conditions. | Australia and New Zealand; Enphase Energy, Inc. provides the earlier-of 15-year or 6,000-cycle warranty, with 70% capacity at year 10 and 60% at year 15. |
| Warranty remedy | Tesla may repair, replace with an equivalent product or refund the market price of an equivalent product. | Repair, replacement, or depreciated purchase-price refund under the governing terms. |
| Labour and reinstallation | The voluntary warranty does not promise unconditional site labour reimbursement. Relocation without Tesla's written consent may void cover; removal and reinstallation reimbursement is not promised. | Removal, reinstallation, and electrical troubleshooting labour are not unconditional limited-warranty entitlements. Not included in the limited warranty; a separate capped installer reimbursement program has its own eligibility conditions. |
| Freight | Unconditional freight reimbursement is not stated. | Eligible RMA return and repaired or replacement-product shipping are covered under the published process. |
| Transfer and registration | A subsequent owner may claim with proof of ownership; registration and the original installation location remain conditions. Registration and extended internet connectivity support the full ten-year voluntary warranty; otherwise Tesla states at least four years remains, subject to the other terms. | Conditional same-site transfer with form and fee within 30 days. Activation, authorised supply, and the governing registration and connectivity conditions apply. |
| Grid/network approval evidence | No standalone grid interface. The regulator lists expansion-bearing Powerwall 3 system configurations; site approval and installed power remain configuration-specific. | The exact family supports commissioned single-phase or three-phase operation. Regulator listing does not establish site, network, islanding, or installation approval. |
| 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 scores only the 13.5 kWh Expansion accessory. Powerwall 3 inverter output, transfer behavior, MPPTs, VPP control and EV features are not transferred into its score. | Enphase Energy Aust. Pty/Ltd. is the named Australian importer. The Australian product page publishes local store and telephone support. |
| Register: parts term | Not in the structured register | stated: Fifteen years from activation or the warranty start defined by the instrument, subject to the earlier cycle limit. |
| Register: labour and service | Not in the structured register | excluded: Removal, installation and troubleshooting of the surrounding electrical system are not included in the limited warranty. |
| Register: transport and freight | Not in the structured register | conditional: Enphase supplies a prepaid eligible return label and ships an eligible repaired or replacement product. Unapproved returns and shipping damage are excluded. |
| Register: registration | Not in the structured register | conditional: Activation and authorised supply conditions apply. Continuous internet should be maintained for software updates and remote diagnostics. |
| Register: transferability | Not in the structured register | conditional: Transfer is limited to the same original installation location and requires the form and fee within 30 days. |
| Register: explicit unknowns | Not in the structured register | 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 6 | 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 Premium Integrated class, on the same rubric weighting. Scores are not comparable across classes or tiers. Full methodology.