Marstek Venus E 4.0 vs Sessy 2.0 10 kWh
Usable capacity: Marstek Venus E 4.0 –, Sessy 2.0 10 kWh 10.4 kWh. The Marstek Venus E 4.0 is better on 5 of 9 comparable points.
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Both models in detail
Who wins where
- Marstek Venus E 4.0
- Sessy 2.0 10 kWh
Biggest differences
| Fact | Venus E 4.0 | 2.0 10 kWh |
|---|---|---|
| Min. operating temperature | -20 °C | 0 °C |
| Nominal capacity | 5.02 kWh | 11 kWh |
| Expandable up to | 15 kWh | 31.2 kWh |
| Weight | 47.2 kg | 96 kg |
| Discharge power (continuous) | 3 kW | 1.7 kW |
| Warranted cycles | 10,000 | 6,000 |
Score per area = position (0–100) relative to all 140 models in this category; higher is better.
| Technical specifications | MarstekVenus E 4.0 | Sessy2.0 10 kWh |
|---|---|---|
| General | ||
| Cell chemistry | LFP1 | LFP2 |
| Smart charging on dynamic prices | Yes3 | Yes2 |
| Wi-Fi / app | Yes1 | Yes2 |
| Performance | ||
| Usable capacity | – | 10.4 kWh2 |
| Nominal capacity | 5.02 kWh1 | 11 kWh✓2 |
| Expandable up to | 15 kWh1 | 31.2 kWh✓2 |
| Charge power (continuous) | 3 kW✓1 | 2.2 kW2 |
| Discharge power (continuous) | 3 kW✓1 | 1.7 kW2 |
| Efficiency | ||
| Depth of discharge | 88 %1 | – |
| Electrical | ||
| Phases | – | 12 |
| Backup power | Yes1 | – |
| Dimensions & weight | ||
| IP rating | IP651 | IP202 |
| Min. operating temperature | -20 °C✓1 | 0 °C2 |
| Width | – | 410 mm2 |
| Height | – | 780 mm2 |
| Depth | – | 270 mm2 |
| Weight | 47.2 kg✓1 | 96 kg2 |
| Warranty & lifespan | ||
| Warranted cycles | 10,000✓1 | 6,0002 |
| Warranty | – | 10 years2 |
Frequently asked questions
Which is better: the Marstek Venus E 4.0 or the Sessy 2.0 10 kWh?
Usable capacity: Marstek Venus E 4.0 –, Sessy 2.0 10 kWh 10.4 kWh. The Marstek Venus E 4.0 is better on 5 of 9 comparable points.
Which is better on min. operating temperature: the Marstek Venus E 4.0 or the Sessy 2.0 10 kWh?
Marstek Venus E 4.0: -20 °C. Sessy 2.0 10 kWh: 0 °C.
Which is better on nominal capacity: the Marstek Venus E 4.0 or the Sessy 2.0 10 kWh?
Sessy 2.0 10 kWh: 11 kWh. Marstek Venus E 4.0: 5.02 kWh.
Related comparisons
How we collect and check this data →
Sources
- MARSTEK VENUS E 4.0 – Brochure / Specifications, juni 2026 — Marstek Energy Co., Limited · accessed 22 Oct 2026
- Sessy 2.0 10 kWh – specificaties, 09/2025 (tekst herkend met OCR) — Sessy B.V. · accessed 27 Sept 2026
- Manufacturer data · accessed 22 Oct 2026