Marstek Venus E vs Zendure SolarFlow 800 Pro
A side-by-side look at the Marstek Venus E and Zendure SolarFlow 800 Pro. Winning figures are highlighted.
| Marstek Marstek Venus E | Zendure Zendure SolarFlow 800 Pro | |
|---|---|---|
| Price from | £999 | £899 |
| Usable capacity | 5.12 kWh | 1.92 kWh |
| Max expandable | 5.12 kWh | 11.52 kWh |
| Max AC output | 800 W | 800 W |
| Max PV input | 0 W | 2640 W |
| Cycle life | 6000 | 6000 |
| Weatherproofing | IP65 | IP65 |
| App control | Yes | Yes |
| AC-coupled (works without panels) | Yes | No |
Marstek Venus E
Different from the rest: the Venus E has no solar input — it's a plug-in battery for off-peak tariff arbitrage. On a tariff like Octopus Agile it can pay back through cheap-rate charging even without panels.
Full Marstek Venus E review →Zendure SolarFlow 800 Pro
DC-coupled, so the panels feed the battery directly and surplus is caught before the 800W bottleneck — the right architecture if you're running big arrays. Strong value per stored kWh, but UK buyers currently have to import via specialist retailers rather than a Zendure UK store, so factor in shipping and thinner local support.
Full Zendure SolarFlow 800 Pro review →