Marstek Venus E 4.0 vs Zendure SolarFlow 800 Plus
Usable capacity: Marstek Venus E 4.0 –, Zendure SolarFlow 800 Plus –. The Marstek Venus E 4.0 is better on 4 of 7 comparable points.
Who wins where
- Marstek Venus E 4.0
- Zendure SolarFlow 800 Plus
Biggest differences
| Fact | Venus E 4.0 | SolarFlow 800 Plus |
|---|---|---|
| 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 | 21.1 kg |
| Expandable up to | 15 kWh | 11.52 kWh |
Score per area = position (0–100) relative to all 39 models in this category; higher is better.
| Technical specifications | MarstekVenus E 4.0 | ZendureSolarFlow 800 Plus |
|---|---|---|
| General | ||
| Cell chemistry | LFP 1 | LFP 2 |
| Wi-Fi / app | Yes 1 | Yes 2 |
| Performance | ||
| Nominal capacity | 5.02 kWh ✓ 1 | 1.92 kWh 2 |
| Expandable up to | 15 kWh ✓ 1 | 11.52 kWh 2 |
| Charge power (continuous) | 3 kW ✓ 1 | 1 kW 2 |
| Discharge power (continuous) | 3 kW ✓ 1 | 0.8 kW 2 |
| Efficiency | ||
| Depth of discharge | 88 % 1 | – |
| Electrical | ||
| Backup power | Yes 1 | – |
| Dimensions & weight | ||
| IP rating | IP65 1 | IP65 2 |
| Min. operating temperature | -20 °C 1 | -20 °C 2 |
| Weight | 47.2 kg 1 | 21.1 kg ✓ 2 |
| Warranty & lifespan | ||
| Warranted cycles | 10,000 1 | – |
Sources
- MARSTEK VENUS E 4.0 – Brochure / Specifications, juni 2026 — Marstek Energy Co., Limited · accessed 27 Sept 2026
- Zendure SolarFlow 800 Plus – User Manual, 1. Specification, augustus 2026 — Zendure · accessed 27 Sept 2026