EcoFlow OCEAN 2 LFP Battery 5kWh vs Marstek Venus E 3.0
Usable capacity: EcoFlow OCEAN 2 LFP Battery 5kWh 4.87 kWh, Marstek Venus E 3.0 –. The EcoFlow OCEAN 2 LFP Battery 5kWh is better on 2 of 7 comparable points.
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Both models in detail
Who wins where
- EcoFlow OCEAN 2 LFP Battery 5kWh
- Marstek Venus E 3.0
Biggest differences
| Fact | OCEAN 2 LFP Battery 5kWh | Venus E 3.0 |
|---|---|---|
| Discharge power (continuous) | 3.4 kW | 2.5 kW |
| Weight | 46 kg | 60 kg |
Score per area = position (0–100) relative to all 140 models in this category; higher is better.
| Technical specifications | EcoFlowOCEAN 2 LFP Battery 5kWh | MarstekVenus E 3.0 |
|---|---|---|
| General | ||
| Cell chemistry | LFP1 | LFP2 |
| Wi-Fi / app | Yes1 | Yes2 |
| Performance | ||
| Usable capacity | 4.87 kWh1 | – |
| Nominal capacity | 5.02 kWh1 | 5.12 kWh✓2 |
| Charge power (continuous) | 2.5 kW1 | 2.5 kW2 |
| Discharge power (continuous) | 3.4 kW✓1 | 2.5 kW2 |
| Peak power | 4.08 kW1 | – |
| Efficiency | ||
| Depth of discharge | – | 90 %2 |
| Electrical | ||
| Coupling | DC-coupled1 | AC-coupled2 |
| Backup power | Yes1 | Yes2 |
| Dimensions & weight | ||
| IP rating | IP661 | IP652 |
| Min. operating temperature | -20 °C1 | -20 °C2 |
| Width | 680 mm1 | – |
| Height | 279 mm1 | 624 mm2 |
| Depth | 196 mm1 | – |
| Weight | 46 kg✓1 | 60 kg2 |
| Warranty & lifespan | ||
| Warranted cycles | – | 6,0002 |
Frequently asked questions
Which is better: the EcoFlow OCEAN 2 LFP Battery 5kWh or the Marstek Venus E 3.0?
Usable capacity: EcoFlow OCEAN 2 LFP Battery 5kWh 4.87 kWh, Marstek Venus E 3.0 –. The EcoFlow OCEAN 2 LFP Battery 5kWh is better on 2 of 7 comparable points.
Which is better on discharge power (continuous): the EcoFlow OCEAN 2 LFP Battery 5kWh or the Marstek Venus E 3.0?
EcoFlow OCEAN 2 LFP Battery 5kWh: 3.4 kW. Marstek Venus E 3.0: 2.5 kW.
Which is better on weight: the EcoFlow OCEAN 2 LFP Battery 5kWh or the Marstek Venus E 3.0?
EcoFlow OCEAN 2 LFP Battery 5kWh: 46 kg. Marstek Venus E 3.0: 60 kg.
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Sources
- EcoFlow OCEAN 2 Three-Phase – Datasheet (EN), Datasheet_EN, PDF van 08.09.2026 — EcoFlow Inc. · accessed 27 Sept 2026
- 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