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MarstekVenus E 3.0

Marstek Venus E 3.0
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The Marstek Venus E 3.0 is a home battery with charge power (continuous) 2.5 kW and cell chemistry LFP.1

Last updated: Technical specifications Rules in Ireland ⇄ Compare this model
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Nominal capacity
5.12kWh1
Charge power (continuous)
2.5kW1
Manufacturer data
Cell chemistry
LFP1
Manufacturer data
Discharge power (continuous)
2.5kW1
Manufacturer data
Depth of discharge
90%1
Manufacturer data
IE

Rules in Ireland

SEAI home battery grant

Unknown

A €600 grant for home battery storage systems was announced on 29 September 2026 and opens from 6 October 2026, subject to final implementation arrangements. Check SEAI for the detailed conditions before applying.

Technical specifications

General
Cell chemistry LFP1
Plug-in battery (wall socket) Yes1
Wi-Fi / app Yes1
Performance
Nominal capacity 5.12 kWh1
Charge power (continuous) 2.5 kW1
Discharge power (continuous) 2.5 kW1
Efficiency
Depth of discharge 90 %1
Electrical
Coupling AC-coupled1
Backup power Yes1
Dimensions & weight
IP rating IP651
Min. operating temperature -20 °C1
Height 624 mm1
Weight 60 kg1
Warranty & lifespan
Warranted cycles 6,0001

Manufacturer documentation

  • Product page (marstekenergy.com, PDF)
  • Manual — MARSTEK VENUS-E (MST-BIE5-2500) – User Manual, 5. Technical Specifications – 2025-05-08 (PDF september 2025) (cdn.shopify.com, PDF)

External links to Marstek's official website. The manufacturer may change or move documents; where they differ, the manufacturer's latest version applies.

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Frequently asked questions

What is the charge power (continuous) of the Marstek Venus E 3.0?

The charge power (continuous) of the Marstek Venus E 3.0 is 2.5 kW.1

Which cell chemistry does the Marstek Venus E 3.0 use?

The cell chemistry of the Marstek Venus E 3.0 is LFP.1

Sources

  1. MARSTEK VENUS-E (MST-BIE5-2500) – User Manual, 5. Technical Specifications, 2025-05-08 (PDF september 2025) — Marstek Energy Co., Limited · accessed 27 Sept 2026
  2. SEAI home battery grant — Sustainable Energy Authority of Ireland (SEAI)