The assessment
How it scores, by category
Market position
The data
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 4.0 · checked 2026-08-23. Evidence.
Sources & references · checked 2026-08-23
Strong evidence coverage
20 of 20 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 4.0 exact product page, current datasheet and warranty policy, rechecked 2026-08-23
- Sourced valuesData card →
- Warranty summaryWarranty period not published →
Show 3 more
- Usable energy / DoD (%)Manufacturer ↗
- Warranty period (yrs)Warranty ↗
- Financial strength & warranty backingManufacturer ↗
Product record history
41 changes to this record · 9 products changed in this update
Smart home & IoT depth: Evidence status
- Before
- sourced
- After
- reviewed_absence
Ranges
- Current text
- checked: 2026-08-23; market: global; max: 3; min: 3; range label: 3 kW; source revision: Exact Venus E 4.0 product page and current datasheet, rechecked 2026-08-23; source url: https://eu.marstekenergy.com/products/marstek-venus-e-4-0; 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 datasheetEnergy density / footprint: Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Operating temperature range
- Before
- Wide (-20°C to 55°C+), self-heating confirmed
- After
- Wide (-20°C to 55°C+)
Warranty assurance
- Before
- Not previously recorded
- After
- Not listed
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 4.0 product page and current datasheet, rechecked 2026-08-23; source url: https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Operating temperature range: Evidence sources
- Before
- https://eu.marstekenergy.com/products/marstek-venus-e-4-0
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Ingress protection (outdoor): Evidence sources
- Before
- https://eu.marstekenergy.com/products/marstek-venus-e-4-0
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Smart home & IoT depth: Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Cell balancing architecture: Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
AU Warranty scope
- Before
- Not previously recorded
- After
- The reviewed product and warranty surfaces are European; no exact Australian warranty coverage was established.
Cell chemistry: Evidence sources
- Before
- https://eu.marstekenergy.com/products/marstek-venus-e-4-0
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Thermal & fire mitigation: Evidence status
- Before
- sourced
- After
- reviewed_absence
Thermal & fire mitigation: Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
AU Grid and installation context
- Before
- No Australian grid-tied variant or local warranty is published for Venus E 4.0.
- After
- No Australian grid-tied approval or local exact-model route is published for Venus E 4.0.
Cell balancing architecture: Evidence status
- Before
- sourced
- After
- reviewed_absence
Safety certification: Evidence status
- Before
- sourced
- After
- reviewed_absence
Grid-injection power (kW): Evidence sources
- Before
- https://eu.marstekenergy.com/products/marstek-venus-e-4-0
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Warranty degradation guarantee: Evidence status
- Before
- sourced
- After
- reviewed_absence
Self-heating capability: Evidence status
- Before
- sourced
- After
- reviewed_absence
Backup output power (kW): Evidence sources
- Before
- https://eu.marstekenergy.com/products/marstek-venus-e-4-0
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
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/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/pages/warranty; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Financial strength & warranty backing: Evidence sources
- Before
- After
- https://eu.marstekenergy.com/en-us/pages/our-story; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Warranty degradation guarantee: Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/pages/warranty; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Warranty assurance: Evidence status
- Before
- Not previously recorded
- After
- reviewed_absence
Safety certification: Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Modularity & scalability: Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Open protocol & API maturity: Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
VPP & grid services readiness: Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Self-heating capability: Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Backup switching speed: Evidence sources
- Before
- https://eu.marstekenergy.com/products/marstek-venus-e-4-0
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
Open protocol & API maturity: Evidence status
- Before
- sourced
- After
- reviewed_absence
Warranty assurance: Evidence sources
- Before
- Not previously recorded
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/pages/warranty; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
AU Support Note
- Before
- MARSTEK launched the exact Venus E 4.0 model in the Netherlands as part of its European plug-in storage rollout; no Australian launch is published.
- After
- Venus E 4.0 remains a European plug-in storage product with no exact Australian sale, approval or warranty evidence.
Usable energy / DoD (%): Evidence sources
- Before
- After
- https://cdn.shopify.com/s/files/1/0746/1575/0952/files/MARSTEK_VENUS-4.0.pdf?v=1783672998; https://eu.marstekenergy.com/products/marstek-venus-e-4-0
VPP & grid services readiness
- Before
- No VPP capability stated
- After
- VPP-capable, protocol ready
Source revision
- Before
- Not previously recorded
- After
- MARSTEK Venus E 4.0 exact product page, current datasheet and warranty policy, rechecked 2026-08-23
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.
- Core scorecard evidence checked
- AU market evidence checked
- Series benchmark evidence checked
- Plain-language warranty summary checked
Scored by Solar Analytica Research
Stay across the benchmark.
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Our reading
Venus E 4.0 scores 60, placing 6 of 8 in the Plug-in ESS class against a class average of 64.1. Its strongest scoring dimension is capacity & usability (100), running 8.2 points above the class average on this dimension. Longevity (verified) scores 40, the lowest pillar for this product. The class average on longevity (verified) is 54.
Dietreich Farquharson · review.solar