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Plug-in ESS

Venus E Max

3.6 kW

MARSTEKReleased 2026

62/ 100

Good

Global

LFP chemistryFast switching

The verdict. In our Plug-in ESS class, MARSTEK Venus E Max leads on capacity & usability.

5thof 8 in Plug-in ESSLower halfclass average 64.1
Ask Watt →

The assessment

How it scores, by category

Capacity & Usability88
Output Power86
Longevity (verified)46
Safety & Chemistry55
Guarantee & Backbone41
Connectivity & Ecosystem57

Market position

5thof 8 in Plug-in ESSLower half
496277

Our reading

Venus E Max scores 62, placing 5 of 8 in the Plug-in ESS class against a class average of 64.1. Its strongest scoring dimension is capacity & usability (88). Guarantee & Backbone scores 41, the lowest pillar for this product. The class average on guarantee & backbone is 51.

Dietreich Farquharson · review.solar

The data

Backup
3.6kW
Switching
<20ms
Cycle life
Not recorded
Warranty
10yr
Before you buy
Local positionUse a market view to check local availability, approvals and warranty scope.
Ask the installerWhat usable capacity, backup power and warranted operating conditions will the installed Venus E Max configuration deliver?

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. Scored model: Venus E Max · checked 2026-08-23. Evidence.

Sources & references · checked 2026-08-23

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 an independent guarantee that a claim is correct.

Record revision. MARSTEK Venus E Max exact product page, current datasheet and warranty policy, rechecked 2026-08-23

Change ledger

Product record history

43 changes to this record · 9 products changed in this update
  1. Record updated

    Self-heating capability: Evidence sources

    Before
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/products/marstek-venus-max
    Primary datasheetUsable energy / DoD (%)
  2. Record updated

    Energy density / footprint: Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/en-us/products/marstek-venus-max; https://eu.marstekenergy.com/products/marstek-venus-max
    Usable energy / DoD (%)Primary datasheet+1 in JSON record
  3. Record updated

    Smart home & IoT depth

    Before
    No documented smart home integration
    After
    Cloud API only
    Primary datasheetUsable energy / DoD (%)
  4. Record updated

    Financial strength & warranty backing: Evidence sources

    Before
    After
    https://eu.marstekenergy.com/en-us/pages/our-story; https://eu.marstekenergy.com/products/marstek-venus-max
    Financial strength & warranty backingPrimary datasheet
  5. Evidence added

    Warranty assurance: Evidence sources

    Before
    Not previously recorded
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/pages/warranty; https://eu.marstekenergy.com/products/marstek-venus-max
    Warranty degradation guaranteePrimary datasheet+1 in JSON record
  6. Record updated

    Thermal & fire mitigation: Evidence sources

    Before
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/products/marstek-venus-max
    Primary datasheetUsable energy / DoD (%)
  7. Record updated

    Output Power pillar score

    Before
    88.1
    After
    85.5
    Usable energy / DoD (%)Primary datasheet
  8. Record updated

    VPP & grid services readiness: Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/en-us/products/marstek-venus-max; https://eu.marstekenergy.com/products/marstek-venus-max
    Usable energy / DoD (%)Primary datasheet+1 in JSON record
  9. Record updated

    AU Grid and installation context

    Before
    No Australian grid-tied variant or local warranty is published for Venus E Max.
    After
    No Australian grid-tied approval or local exact-model route is published for Venus E Max.
    Benchmark sourcesupersededWarranty degradation guarantee+3 in JSON record
  10. Record updated

    Modularity & scalability: Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/en-us/products/marstek-venus-max; https://eu.marstekenergy.com/products/marstek-venus-max
    Usable energy / DoD (%)Primary datasheet+1 in JSON record
  11. Record updated

    Warranty degradation guarantee: Evidence sources

    Before
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/pages/warranty; https://eu.marstekenergy.com/products/marstek-venus-max
    Warranty degradation guaranteePrimary datasheet+1 in JSON record
  12. Record updated

    Primary Source

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://eu.marstekenergy.com/products/marstek-venus-max
    Primary datasheet+1 in JSON record
  13. Record updated

    AU Support Note

    Before
    MARSTEK launched the exact Venus E Max model in the Netherlands as part of its European plug-in storage rollout; no Australian launch is published.
    After
    Venus E Max remains a European plug-in storage product with no exact Australian sale, approval or warranty evidence.
    Benchmark sourcesupersededWarranty degradation guarantee+3 in JSON record
  14. Record updated

    Smart home & IoT depth: Evidence sources

    Before
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/products/marstek-venus-max
    Primary datasheetUsable energy / DoD (%)
  15. Record updated

    Operating temperature range: Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/products/marstek-venus-max
    Primary datasheetUsable energy / DoD (%)+1 in JSON record
  16. Evidence added

    Warranty assurance: Evidence status

    Before
    Not previously recorded
    After
    reviewed_absence
    Warranty degradation guaranteePrimary datasheet+1 in JSON record
  17. Record updated

    Cell chemistry: Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/en-us/products/marstek-venus-max; https://eu.marstekenergy.com/products/marstek-venus-max
    Usable energy / DoD (%)Primary datasheet+1 in JSON record
  18. Record updated

    Warranty period (yrs): Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/en-us/products/marstek-venus-max; https://eu.marstekenergy.com/pages/warranty; https://eu.marstekenergy.com/products/marstek-venus-max
    Usable energy / DoD (%)Warranty degradation guarantee+2 in JSON record
  19. Record updated

    Backup switching speed: Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/en-us/products/marstek-venus-max; https://eu.marstekenergy.com/products/marstek-venus-max
    Usable energy / DoD (%)Primary datasheet+1 in JSON record
  20. Record updated

    Manufacturing track record: Evidence sources

    Before
    After
    https://eu.marstekenergy.com/en-us/pages/our-story; https://eu.marstekenergy.com/products/marstek-venus-max
    Financial strength & warranty backingPrimary datasheet
  21. Record updated

    Grid-injection power (kW): Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/en-us/products/marstek-venus-max; https://eu.marstekenergy.com/products/marstek-venus-max
    Usable energy / DoD (%)Primary datasheet+1 in JSON record
  22. Record updated

    Warranty degradation guarantee: Evidence status

    Before
    sourced
    After
    reviewed_absence
    Warranty degradation guaranteePrimary datasheet+1 in JSON record
  23. Record updated

    Cell balancing architecture: Evidence sources

    Before
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/products/marstek-venus-max
    Primary datasheetUsable energy / DoD (%)
  24. Record updated

    Source revision

    Before
    Attribution re-verification 2026-08-12: the energy density note cited a MARSTEK press release that is not among the record's sources. The recorded band is supported by the product page, which now carries the citation; no value or score changed.
    After
    MARSTEK Venus E Max exact product page, current datasheet and warranty policy, rechecked 2026-08-23
    Usable energy / DoD (%)Primary datasheet
  25. Record updated

    Safety certification: Evidence sources

    Before
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/products/marstek-venus-max
    Primary datasheetUsable energy / DoD (%)
  26. Record updated

    Open protocol & API maturity: Evidence sources

    Before
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/products/marstek-venus-max
    Primary datasheetUsable energy / DoD (%)
  27. Record updated

    Backup output power (kW): Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/en-us/products/marstek-venus-max; https://eu.marstekenergy.com/products/marstek-venus-max
    Usable energy / DoD (%)Primary datasheet+1 in JSON record
  28. Record updated

    Self-heating capability: Evidence status

    Before
    sourced
    After
    reviewed_absence
    Primary datasheetUsable energy / DoD (%)
  29. Record updated

    Usable energy / DoD (%): Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/en-us/products/marstek-venus-max; https://eu.marstekenergy.com/products/marstek-venus-max
    Usable energy / DoD (%)Primary datasheet+1 in JSON record
  30. Record updated

    Ranges

    Current text
    checked: 2026-08-23; market: global; max: 3.6; min: 3.6; range label: 3.6 kW; source revision: Exact Venus E Max product page and current datasheet, rechecked 2026-08-23; source url: https://eu.marstekenergy.com/products/marstek-venus-max; unit: kW

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    Benchmark sourcesupersededPrimary datasheet
  31. Record updated

    Ingress protection (outdoor): Evidence sources

    Before
    https://eu.marstekenergy.com/en-us/products/marstek-venus-max
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/en-us/products/marstek-venus-max; https://eu.marstekenergy.com/products/marstek-venus-max
    Usable energy / DoD (%)Primary datasheet+1 in JSON record
  32. Record updated

    Global score

    Before
    61.4
    After
    61.8
    Usable energy / DoD (%)Primary datasheet
  33. Record updated

    Safety certification: Evidence status

    Before
    sourced
    After
    reviewed_absence
    Primary datasheetUsable energy / DoD (%)
  34. Record updated

    Open protocol & API maturity

    Before
    Proprietary / no documented API
    After
    Cloud API only
    Primary datasheetUsable energy / DoD (%)
  35. Record updated

    Operating temperature range

    Before
    Wide (-20°C to 55°C+), self-heating confirmed
    After
    Wide (-20°C to 55°C+)
    Usable energy / DoD (%)Primary datasheet+1 in JSON record
  36. Record updated

    Connectivity & Ecosystem pillar score

    Before
    43.8
    After
    56.8
    Usable energy / DoD (%)Primary datasheet
  37. Record updated

    Guarantee & Backbone pillar score

    Before
    47
    After
    41
    Usable energy / DoD (%)Primary datasheet
  38. Record updated

    Cell balancing architecture: Evidence status

    Before
    sourced
    After
    reviewed_absence
    Primary datasheetUsable energy / DoD (%)
  39. Record updated

    Source

    Before
    checked: 2026-07-14; source revision: Live source; revision not stated; source url: https://eu.marstekenergy.com/en-eu/blogs/news/redefining-plug-in-energy-storage-marstek-netherlands-launch-event-2026
    After
    checked: 2026-08-23; source revision: Exact Venus E Max product page and current datasheet, rechecked 2026-08-23; source url: https://eu.marstekenergy.com/products/marstek-venus-max
    Benchmark sourcesupersededPrimary datasheet
  40. Evidence added

    AU Warranty scope

    Before
    Not previously recorded
    After
    The reviewed product and warranty surfaces are European; no exact Australian warranty coverage was established.
    Benchmark sourcesupersededWarranty degradation guarantee+3 in JSON record
  41. Record updated

    Thermal & fire mitigation: Evidence status

    Before
    sourced
    After
    reviewed_absence
    Primary datasheetUsable energy / DoD (%)
  42. Evidence added

    Warranty assurance

    Before
    Not previously recorded
    After
    Not listed
    Warranty degradation guaranteePrimary datasheet+1 in JSON record
  43. Record updated

    AU Evidence sources

    Before
    https://eu.marstekenergy.com/; https://eu.marstekenergy.com/en-eu/blogs/news/redefining-plug-in-energy-storage-marstek-netherlands-launch-event-2026
    After
    https://cdn.shopify.com/s/files/1/0746/1575/0952/files/VENUS_E_MAX.pdf?v=1783672963; https://eu.marstekenergy.com/pages/warranty; https://eu.marstekenergy.com/products/marstek-venus-max
    Warranty degradation guaranteePrimary datasheet+3 in JSON record

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.

  1. Core scorecard evidence checked
  2. AU market evidence checked
  3. Series benchmark evidence checked
  4. Plain-language warranty summary checked

Evidence record (JSON)

Scored by Solar Analytica Research

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