Marstek Venus E
The Marstek Venus E is a home battery with usable capacity 5.12 kWh, charge power (continuous) 2.5 kW and cell chemistry LFP.1
Key figures
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UnknownA €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 | |
| Usable capacity | 5.12 kWh1 |
| Nominal capacity | 5.12 kWh1 |
| Charge power (continuous) | 2.5 kW1 |
| Electrical | |
| Coupling | AC-coupled1 |
| Backup power | Yes1 |
| Off-grid capable | Yes1 |
| Dimensions & weight | |
| IP rating | IP651 |
| Min. operating temperature | -20 °C1 |
| Width | 560 mm1 |
| Height | 690 mm1 |
| Depth | 201 mm1 |
| Warranty & lifespan | |
| Warranted cycles | 6,0001 |
| Warranty | 10 years1 |
Manufacturer documentation
- Product page — MARSTEK VENUS C / E AC-Coupled Energy Storage System – 1.0
External links to Marstek's official website. The manufacturer may change or move documents; where they differ, the manufacturer's latest version applies.
Compare with
Similar models
Other brands, same type and a comparable size.
More from Marstek
- Marstek Venus C Usable capacity: 2.56 kWh
- Marstek Venus E 3.0 Nominal capacity: 5.12 kWh
- Marstek Venus E 4.0 Nominal capacity: 5.02 kWh
- Marstek Venus E MAX Nominal capacity: 10.05 kWh
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Frequently asked questions
What is the usable capacity of the Marstek Venus E?
The usable capacity of the Marstek Venus E is 5.12 kWh.1
What is the charge power (continuous) of the Marstek Venus E?
The charge power (continuous) of the Marstek Venus E is 2.5 kW.1
Which cell chemistry does the Marstek Venus E use?
The cell chemistry of the Marstek Venus E is LFP.1
How long is the warranty on the Marstek Venus E?
The warranty on the Marstek Venus E is 10 years.1
Sources
- MARSTEK VENUS C / E AC-Coupled Energy Storage System, 1.0 — Marstek · accessed 16 Oct 2026
- SEAI home battery grant — Sustainable Energy Authority of Ireland (SEAI)