Marstek Venus C
The Marstek Venus C is a home battery with usable capacity 2.56 kWh, charge power (continuous) 2.5 kW and cell chemistry LFP.1
Key figures
Technical specifications
| General | |
|---|---|
| Cell chemistry | LFP1 |
| Plug-in battery (wall socket) | Yes1 |
| Wi-Fi / app | Yes1 |
| Performance | |
| Usable capacity | 2.56 kWh1 |
| Nominal capacity | 2.56 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 | 450 mm1 |
| Height | 550 mm1 |
| Depth | 200 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 E Usable capacity: 5.12 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
Featured in these lists
Guides on home batteries
- Usable vs nominal capacity: what a home battery really delivers
- AC-coupled vs DC-coupled: how a home battery connects
- Plug-in home batteries in the UK: rules, G98 and safety
- Home batteries and time-of-use tariffs: charging cheap, using at peak
- Home battery fire safety: cell chemistry, siting and PAS 63100
How we collect and check this data →
Frequently asked questions
What is the usable capacity of the Marstek Venus C?
The usable capacity of the Marstek Venus C is 2.56 kWh.1
What is the charge power (continuous) of the Marstek Venus C?
The charge power (continuous) of the Marstek Venus C is 2.5 kW.1
Which cell chemistry does the Marstek Venus C use?
The cell chemistry of the Marstek Venus C is LFP.1
How long is the warranty on the Marstek Venus C?
The warranty on the Marstek Venus C is 10 years.1
Sources
- MARSTEK VENUS C / E AC-Coupled Energy Storage System, 1.0 — Marstek · accessed 16 Oct 2026