The assessment
How it scores, by category
Market position
The data
DC-coupled battery
Stores DC energy and relies on system power electronics outside the battery product for household AC.
- Product role
- The published battery record covers the storage stack, controller and stated capacity range.
- Published range
- 10.92–49.14 kWh
- Phase
- Not recorded
- Backup boundary
- Installation-specific
What the documents establish
Published evidence, source-reviewed non-disclosure and unresolved questions remain separate from the product score.
Usable capacity
Stated depth of discharge: 100%. Published usable energy: 10.92 kWh in the scored configuration. These values may have different measurement conditions.10.92 kWh usableScored configuration: EQ5500-L2. Published range 10.92–49.14 kWh.
The stated depth of discharge and published usable energy can have different test conditions or configuration limits. They do not by themselves establish nominal capacity or a reserve that is always inaccessible. Delivered AC energy and runtime also depend on the inverter, settings and loads.
The 10.92 kWh base stack is scored; larger stacks receive no capacity-size advantage.
Usable capacity sourceDepth-of-discharge sourceCapacity guarantee: minimum retained at year 10
No year-by-year capacity schedule is published for this product - the manufacturer guarantees only this end-of-term minimum, not a specific decline curve. Capacity figure based on the sourced usable capacity of the base configuration; modular systems scale with additional modules.
Verification & sources
Market context
Global evidencechange in the site menu
Global benchmark. This scorecard is benchmarked globally. A global score does not imply local availability, certification, warranty coverage, or installer compatibility.
Benchmark anchor. The 10.92 kWh base stack is scored; larger stacks receive no capacity-size advantage. Scored model: EQ5500-L2 · checked 2026-08-27. Evidence.
Sources & references · checked 2026-09-04
Strong evidence coverage
21 of 21 scored criteria link directly to a published source.
Values marked estimated, derived, or not found remain visible on the audit sheet and do not carry the same evidential weight as a linked source. Coverage measures direct links, not a guarantee that a claim is correct.
How far the evidence reaches
1 of 5 questions with checkable rows has a row beyond the maker's claim.
- Output3 checkable rows, none beyond the maker's claimMaker-only: 4 design facts
- Endurance3 checkable rows, all reviewed absences: not published, we lookedMaker-only: 4 maker's commitments
- Safety1 of 3 checkable rows beyond the maker's claimMaker-only: 1 design fact
- Backing1 checkable row, not beyond the maker's claimMaker-only: 1 maker's commitment
- Fit1 checkable row, a reviewed absence: not published, we looked5 held rows, not scored
- FootprintNot scored for batteries
- Third-party source
- Certified or regulator-listed
- Manufacturer claim
- Reviewed absence
Each bar is one question's checkable rows for this product at true share, stronger tiers first; hatching marks a reviewed absence: not published, we looked. Maker-only rows (warranty terms and design facts that rest on the maker's own documents) are counted under each question, never dropped. Held rows have no value, and each says why: not yet confirmed for the exact product, published but not matched to a rubric band, set by paired equipment, or not applicable. They are not scored and are counted under each question, never drawn. review.solar has measured none of these rows itself. How the evidence puzzle works
Record revision. Exact family technical sources, Australian warranty and current regulator snapshot checked 2026-08-27 Battery performance register refresh 2026-08-31: battery/DC round-trip efficiency and cycles-to-70% closed or held from the exact governing sheet. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged. T6 United States first-market overlay review 2026-09-04: official United States catalogues recorded; Australian and German overlays and scores unchanged. Exact Australian EQ5500 manual fire-protection reader clarification checked 2026-10-05; printed V1.0.0 May 2026, score and prior market/approval/warranty verification dates unchanged.
- Sourced valuesData card →
- Warranty summary10-year product warranty →
Show 5 more
- Verified reliabilityManufacturer ↗
- Safety certificationManufacturer ↗
- Thermal & fire mitigationManufacturer ↗
- Manufacturing track recordManufacturer ↗
- Firmware & security disclosureManufacturer ↗
Help strengthen this record
These are published evidence gaps, not private submissions. A source is reviewed under the same methodology whether it comes from a reader, installer or manufacturer.
- Cycle life (cycles to 70%)Not stated in reviewed documentsThe public documents reviewed for this record do not state this value. A published or third-party source is requested.Offer a source
- Verified reliabilityNot stated in reviewed documentsThe public documents reviewed for this record do not state this value. A published or third-party source is requested.Offer a source
- Cell balancing architectureNot stated in reviewed documentsThe public documents reviewed for this record do not state this value. A published or third-party source is requested.Offer a source
- Open protocol & API maturityNot stated in reviewed documentsThe public documents reviewed for this record do not state this value. A published or third-party source is requested.Offer a source
Product record history
11 changes to this record · 280 products changed in this update
Verified reliability
- Before
- Not independently tested
- After
- Not third-party tested
Dual-port flexibility
- Before
- Not previously recorded
- After
- Not applicable to this product
Cycle life (cycles to 70%)
- Before
- Not previously recorded
- After
- Not published
Thermal load management
- Before
- Not previously recorded
- After
- Not applicable to this product
EV charging integration
- Before
- Not previously recorded
- After
- Not applicable to this product
VPP & grid services readiness
- Before
- Not previously recorded
- After
- Not applicable to this product
Smart home & IoT depth
- Before
- Not previously recorded
- After
- Not applicable to this product
6 changes to this record · 43 products changed in this update
US Evidence sources
- Before
- https://www.fox-ess.com/us/; https://www.foxesscloud.com/us/product/battery
- After
- https://us.fox-ess.com/Public/Uploads/uploadfile/files/20260723/USWarrantyPolicy202602.pdf; https://us.fox-ess.com/download/datasheets; https://us.fox-ess.com/products/residential; https://www.fox-ess.com/
DE Evidence sources
- Before
- https://de.foxesscloud.com/product/eq4800; https://www.foxesscloud.com/us/product/battery
- After
- https://de.fox-ess.com/downloads/datenblaetter; https://de.fox-ess.com/produkte/batterie; https://www.fox-ess.com/
DE Support Note
- Before
- No German FoxESS catalogue naming EQ5500-L2 was retrieved. Held is not unavailable. EQ4800 is a different family.
- After
- On 19 October 2026 the FoxESS German site (de.fox-ess.com) listed EQ5000-P, EQ3300, EK6, EK12, DQ6.6 and CQ16 on its battery page, and its datasheet index battery filter adds EQ5000, EK5, EK11, CQ6 and CQ7. No German page or datasheet entry names EQ5500. The German catalogue is reachable and omits EQ5500-L2, so the DE overlay is unavailable; EQ5000-P and EQ4800 are different identities.
US Support Note
- Before
- The United States FoxESS battery shell does not retrieve EQ5500-L2. fox-ess.com/us returns 404. Held is not unavailable. EQ4800 and PowerQ are not transferred.
- After
- On 19 October 2026 the FoxESS US site (us.fox-ess.com, the USA entry in the maker's country selector) listed the PowerQ series, the US Series split-phase hybrid inverter, ECS4000 and EQ4000 on its residential page, and its datasheet index lists CQ7, ECS4000 and EQ4000 as batteries. The US Warranty Policy Version 3.0 (11 February 2026) names ECS4000 and EQ4000 only, and no US page or document names EQ5500. The US catalogue is reachable and omits EQ5500-L2, so the US overlay is unavailable; EQ4800 and PowerQ are not transferred.
US Status
- Before
- not_reviewed
- After
- unavailable
DE Status
- Before
- not_reviewed
- After
- unavailable
3 changes to this record · 153 products changed in this update
1 change to this record · 43 products changed in this update
Safety certification: Evidence sources
- Before
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf
- After
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf; https://cer.gov.au/document/cec-approved-solar-batteries-0
5 changes to this record · 6 products changed in this update
AU Warranty conditions
- After this change
- labour: End-user labour cover is not promised as an unconditional entitlement.; registration: Product registration and connectivity at commissioning are required under the governing terms.; remedy: Fox ESS liability under the policy is limited to replacement, repair, refund and compensation (section iii). Fox ESS may decline a replacement where the policy terms are breached (section i).; removal reinstallation: Removal and reinstallation are not promised.; transferability: No subsequent-owner transfer right was found in the reviewed warranty.; transport: Transport cover is conditional rather than a full-term entitlement.
The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.
AU market evidenceVerified reliability+6 in JSON recordSummary
- After this change
- The scored EQ5500-L2 uses one EQ5500-M and one EQ5500-S, providing 10.92 kWh. The Australian datasheet specifies natural-convection cooling. The linked Australian EQ5500 manual separately describes an aerosol fire-protection module in each battery unit, with thermal activation at or above 170 C and discharge within 5 seconds. An EQ5500 inverter compatibility list hosted on the Australian manufacturer site, at a file path dated 25 May 2026 with no printed revision, marks a built-in fire suppression module as optional and states that it is not available in the Australia market. The manual and that list do not agree on whether Australian units include the module, so its presence in Australian units is not publicly established. These are manufacturer specifications, not independent propagation-test results or a guarantee that a battery fire cannot occur. The manual calls for replacement after activation through authorised service. This suppression device does not establish active operational thermal management, so the existing passive-cooling score remains. Cell-balancing architecture and independent reliability remain unestablished; BMS status indicators and CAN communication do not answer those questions. The disclosure applies to the reviewed Australian manual revision and does not establish retrofit entitlement for every previously supplied unit.
The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.
Primary datasheetAU Grid and installation context
- Before
- The exact family is a high-voltage DC battery with current Australian battery-list entries. Inverter selection, DNSP settings and system acceptance remain separate installation decisions.
- After
- The exact family is a high-voltage DC battery with current Australian battery-list entries. The manufacturer's Declaration of Inverter Battery Compatibility EQ5500 Series, dated 21 May 2026, lists EQ5500-L2 with the single-phase H1-G2 and AC1-G2 models and the KH and KA hybrid models. The same declaration does not list EQ5500-L2 with the three-phase H3-Smart or H3 Pro models. Inverter selection, DNSP settings and system acceptance remain separate installation decisions.
AU Evidence sources
- Before
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260611/AUBATTERYWARRANTYV2.7.pdf; https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf; https://au.fox-ess.com/products/battery; https://cer.gov.au/document/cec-approved-solar-batteries-0; https://en.fox-ess.com/about-us-2/; https://www.fox-ess.com/Public/Uploads/uploadfile/files/20251202/WLanWWUserManual20240524.pdf; https://www.fox-ess.com/Public/Uploads/uploadfile/files/20251231/ENEQ4800EQ5500ManualV1.0.8.pdf
- After
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260611/AUBATTERYWARRANTYV2.7.pdf; https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf; https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260615/DeclarationofInverterBatteryCompatibilityEQ5500.pdf; https://au.fox-ess.com/products/battery; https://cer.gov.au/document/cec-approved-solar-batteries-0; https://en.fox-ess.com/about-us-2/; https://www.fox-ess.com/Public/Uploads/uploadfile/files/20251202/WLanWWUserManual20240524.pdf; https://www.fox-ess.com/Public/Uploads/uploadfile/files/20251231/ENEQ4800EQ5500ManualV1.0.8.pdf
Evidence sources
- Before
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/AUEQ5500UserManualENV1.0.020260610.pdf; https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf; https://au.fox-ess.com/products/battery/27
- After
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260525/EQ5500InverterCompatibilityList.pdf; https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/AUEQ5500UserManualENV1.0.020260610.pdf; https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf; https://au.fox-ess.com/products/battery/27
5 changes to this record · 1 product changed in this update
Summary
- Before
- Not previously recorded
- After
- The scored EQ5500-L2 uses one EQ5500-M and one EQ5500-S, providing 10.92 kWh. The Australian datasheet specifies natural-convection cooling. The linked Australian EQ5500 manual separately describes an aerosol fire-protection module in each battery unit, with thermal activation at or above 170 C and discharge within 5 seconds. These are manufacturer specifications, not independent propagation-test results or a guarantee that a battery fire cannot occur. The manual calls for replacement after activation through authorised service. This suppression device does not establish active operational thermal management, so the existing passive-cooling score remains. Cell-balancing architecture and independent reliability remain unestablished; BMS status indicators and CAN communication do not answer those questions. The disclosure applies to the reviewed Australian manual revision and does not establish retrofit entitlement for every previously supplied unit.
Evidence sources
- Before
- Not previously recorded
- After
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/AUEQ5500UserManualENV1.0.020260610.pdf; https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf; https://au.fox-ess.com/products/battery/27
Thermal & fire mitigation: Evidence sources
- Before
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf; https://www.fox-ess.com/Public/Uploads/uploadfile/files/20251231/ENEQ4800EQ5500ManualV1.0.8.pdf
- After
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/AUEQ5500UserManualENV1.0.020260610.pdf; https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf; https://au.fox-ess.com/products/battery/27
Source revision
- After this change
- Exact family technical sources, Australian warranty and current regulator snapshot checked 2026-08-27 Battery performance register refresh 2026-08-31: battery/DC round-trip efficiency and cycles-to-70% closed or held from the exact governing sheet. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged. T6 United States first-market overlay review 2026-09-04: official United States catalogues recorded; Australian and German overlays and scores unchanged. Exact Australian EQ5500 manual fire-protection reader clarification checked 2026-10-05; printed V1.0.0 May 2026, score and prior market/approval/warranty verification dates unchanged.
The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.
Primary datasheet
3 changes to this record · 17 products changed in this update
US Evidence sources
- Before
- https://www.foxesscloud.com/us/product/battery
- After
- https://www.fox-ess.com/us/; https://www.foxesscloud.com/us/product/battery
Source revision
- After this change
- Exact family technical sources, Australian warranty and current regulator snapshot checked 2026-08-27 Battery performance register refresh 2026-08-31: battery/DC round-trip efficiency and cycles-to-70% closed or held from the exact governing sheet. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged. T6 United States first-market overlay review 2026-09-04: official United States catalogues recorded; Australian and German overlays and scores unchanged.
The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.
Primary datasheetUS Support Note
- Before
- The United States FoxESS battery shell does not retrieve EQ5500-L2. Held is not unavailable. EQ4800 and PowerQ are not transferred.
- After
- The United States FoxESS battery shell does not retrieve EQ5500-L2. fox-ess.com/us returns 404. Held is not unavailable. EQ4800 and PowerQ are not transferred.
9 changes to this record · 152 products changed in this update
US Status
- Before
- Not previously recorded
- After
- not_reviewed
US Support Note
- Before
- Not previously recorded
- After
- The United States FoxESS battery shell does not retrieve EQ5500-L2. Held is not unavailable. EQ4800 and PowerQ are not transferred.
Source revision
- After this change
- Exact family technical sources, Australian warranty and current regulator snapshot checked 2026-08-27 Battery performance register refresh 2026-08-31: battery/DC round-trip efficiency and cycles-to-70% closed or held from the exact governing sheet. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged.
The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.
Primary datasheetUS Certifications
- Before
- Not previously recorded
- After
DE Evidence sources
- Before
- Not previously recorded
- After
- https://de.foxesscloud.com/product/eq4800; https://www.foxesscloud.com/us/product/battery
US Evidence sources
- Before
- Not previously recorded
- After
- https://www.foxesscloud.com/us/product/battery
DE Certifications
- Before
- Not previously recorded
- After
DE Support Note
- Before
- Not previously recorded
- After
- No German FoxESS catalogue naming EQ5500-L2 was retrieved. Held is not unavailable. EQ4800 is a different family.
DE Status
- Before
- Not previously recorded
- After
- not_reviewed
2 changes to this record · 61 products changed in this update
Source revision
- Before
- Exact family technical sources, Australian warranty and current regulator snapshot checked 2026-08-27
- After
- Exact family technical sources, Australian warranty and current regulator snapshot checked 2026-08-27 Battery performance register refresh 2026-08-31: battery/DC round-trip efficiency and cycles-to-70% closed or held from the exact governing sheet.
Round-trip efficiency (%): Evidence sources
- Before
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf
- After
- https://au.fox-ess.com/Public/Uploads/uploadfile/files/20260612/ENEQ5500DatasheetAUV1.220260610.pdf; https://www.fox-ess.com/Public/Uploads/uploadfile/files/20251231/ENEQ4800EQ5500ManualV1.0.8.pdf
2 changes to this record · 147 products changed in this update
Certification: EQ5500-L2
- Before
- Not previously recorded
- After
- accepted at: 2026-08-29; category: battery; certification model: EQ5500-L2; jurisdiction: au_cec; match method: exact_normalized_single_record; product slug: foxess-eq5500-10-92-49-14-au; source key: data/batteries/foxess_eq5500_au.json; source manufacturer name: FOXESS CO LTD; validation: approved at: 2026-06-16; candidate model: EQ5500-L2; data confidence: High; evidence url: https://cer.gov.au/document/cec-approved-solar-batteries-0; expires at: 2027-12-31; list data version: au-cer-battery-2026-08-20-b3f077cbe945; list retrieved at: 2026-08-27T04:30:11Z; listing status at validation: listed
1 change to this record · 6 products changed in this update
Product record
kind: battery; brand: FoxESS; name: EQ5500 High-Voltage Stack; model: EQ5500-L2 through EQ5500-L9; scored reference EQ5500-L2; score: 63.9
Primary datasheet
This is review.solar's publication history. It does not claim the product changed on the recorded date, and it excludes compatibility, system pairing, installation suitability and relative leaderboard prose. Open the complete JSON record.
Evidence timeline
Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.
- US market evidence checked
- DE market evidence checked
- AU market evidence checked
- Plain-language warranty summary checked
- Core scorecard evidence checked
- Australian certification source identity verified
- Series benchmark evidence checked
Scored by Solar Analytica Research
Further reading from Findings
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
EQ5500 High-Voltage Stack scores 65, placing 38 of 76 in the Performance & Value class against a class average of 64.4. Its highest-scoring dimension is capacity & usability (90), running 6.6 points above the class average on this dimension. Energy Ecosystem scores 40, the lowest pillar for this product. The class average on energy ecosystem is 51. Key specifications: LFP, 95% round-trip efficiency, 4.48 kW continuous output.
Dietreich Farquharson · review.solar