Marstek Venus D
Configuration
| Capacity | Max output | from | €/kWh |
|---|---|---|---|
| 2.6 kWh | 2.2 kW | €1,002 | €385 |
| 5.1 kWh | 2.2 kW | €1,509 | €296 |
| 7.7 kWh | 2.2 kW | €2,015 | €262 |
| 10.2 kWh | 2.2 kW | €2,522 | €247 |
Specifications
Cell chemistry | LFP |
Max output | 2.2 kW |
Phases | 1 |
Solar input | 4000 W |
Backup power | Yes |
P1 meter | Yes |
Home Assistant | Yes |
Modbus | Yes |
IP rating | IP65 |
Cycle life | 6000 |
Warranty | 10 jr |
Weight | 28 kg |
Inverter rated 2200 W continuous AC (charge and discharge); 2500 W is a short-duration peak/backup load, not continuous, so maxOutputW set to 2200. Output is fixed by the integrated inverter and does not increase with added battery modules (modules only add capacity, 2.56 kWh each, up to 6 modules = 15.36 kWh). 4 MPPT PV inputs, 1000 W each = 4000 W total. Native Modbus TCP over Ethernet; multiple community Home Assistant integrations (Modbus TCP and local API). EPS backup switchover <15 ms. weightKg is the base unit (28 kg); each added module is 19 kg. Usable depth-of-discharge percent and round-trip efficiency not published in official specs.
Sources
All figures are model estimates from public data and assumptions, not a guarantee or financial advice. Real results depend on market prices, your usage and your equipment. Verify with the provider and installer before deciding.
Prices are a rough guide for now and update automatically later.