Marstek Venus E 4.0 vs Zendure SolarFlow 800 Pro 2
Usable capacity: Marstek Venus E 4.0 –, Zendure SolarFlow 800 Pro 2 –. The Marstek Venus E 4.0 is better on 4 of 7 comparable points.
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Both models in detail
Who wins where
- Marstek Venus E 4.0
- Zendure SolarFlow 800 Pro 2
Biggest differences
| Fact | Venus E 4.0 | SolarFlow 800 Pro 2 |
|---|---|---|
| Discharge power (continuous) | 3 kW | 0.8 kW |
| Charge power (continuous) | 3 kW | 1 kW |
| Nominal capacity | 5.02 kWh | 1.92 kWh |
| Weight | 47.2 kg | 22.6 kg |
| Expandable up to | 15 kWh | 11.52 kWh |
Score per area = position (0–100) relative to all 140 models in this category; higher is better.
| Technical specifications | MarstekVenus E 4.0 | ZendureSolarFlow 800 Pro 2 |
|---|---|---|
| General | ||
| Cell chemistry | LFP1 | LFP2 |
| Smart charging on dynamic prices | Yes3 | – |
| Wi-Fi / app | Yes1 | Yes2 |
| Performance | ||
| Nominal capacity | 5.02 kWh✓1 | 1.92 kWh2 |
| Expandable up to | 15 kWh✓1 | 11.52 kWh2 |
| Charge power (continuous) | 3 kW✓1 | 1 kW2 |
| Discharge power (continuous) | 3 kW✓1 | 0.8 kW2 |
| Efficiency | ||
| Depth of discharge | 88 %1 | – |
| Electrical | ||
| Backup power | Yes1 | – |
| Dimensions & weight | ||
| IP rating | IP651 | IP652 |
| Min. operating temperature | -20 °C1 | -20 °C2 |
| Weight | 47.2 kg1 | 22.6 kg✓2 |
| Warranty & lifespan | ||
| Warranted cycles | 10,0001 | – |
Frequently asked questions
Which is better: the Marstek Venus E 4.0 or the Zendure SolarFlow 800 Pro 2?
Usable capacity: Marstek Venus E 4.0 –, Zendure SolarFlow 800 Pro 2 –. The Marstek Venus E 4.0 is better on 4 of 7 comparable points.
Which is better on discharge power (continuous): the Marstek Venus E 4.0 or the Zendure SolarFlow 800 Pro 2?
Marstek Venus E 4.0: 3 kW. Zendure SolarFlow 800 Pro 2: 0.8 kW.
Which is better on charge power (continuous): the Marstek Venus E 4.0 or the Zendure SolarFlow 800 Pro 2?
Marstek Venus E 4.0: 3 kW. Zendure SolarFlow 800 Pro 2: 1 kW.
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
- Zendure SolarFlow 800 Pro 2 – User Manual, 1. Specification, 20260611 — Zendure · accessed 27 Sept 2026
- Manufacturer data · accessed 22 Oct 2026