MARSTEK Venus E V3 5kWh PLUG & PLAY
MARSTEK Venus E V3 5kWh PLUG & PLAY
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The Marstek Venus E is a so-called “plug-and-play” AC-coupled home battery (energy storage system) designed to work in conjunction with existing PV (solar panel) installations without the need for a hybrid inverter.
The Gen 3.0 version is a more recent version with improvements in design, communication capabilities and performance.
Key Features & Specifications
Here are the notable technical features and uses:
| Characteristic | Value / comment |
|---|---|
| Capacity | 5.12 kWh (usable energy storage) |
| Output power (on-grid & backup) | Up to 2.5 kW AC output (on-grid) and also for backup power supply |
| Input for charging | Up to 2.5 kW AC charging power |
| Cycle life | > 6000 full cycle charges |
| Efficiency | The battery ↔ AC conversion is > 93.5% (according to Marstek) |
| Protection / environment | IP65 housing (dust and splash proof) |
| Temperature range | Operation possible over a wide temperature range, e.g. down to –20 °C |
| Communication & integration | WiFi, Bluetooth, RS485, Ethernet (LAN port added) |
| Backup function / switchover | 15 ms or equivalent fast switch to backup mode in case of power failure |
| Extensibility / scalability | Multiple units in parallel possible (e.g. up to 3 units on single phase) |
| Warranty | 10 year factory warranty is often mentioned |
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Energy buffer for self-consumption
You can store excess solar energy in the battery and use it later, making you less dependent on the grid and allowing you to better manage your own consumption. -
Backup in case of power failure
The Venus E can continue to power critical loads if the grid fails (e.g. lighting, refrigerators, communication devices). -
Smart control & rates
Thanks to AI-based optimization modes, coupling with dynamic electricity tariffs, and real-time metering, the battery can attempt to charge/discharge at the optimal time. -
No inverter adjustment required
Because the system is AC coupled, you can add it to existing installations without replacing your existing PV inverter. -
Flexibility & modularity
You can combine multiple units to achieve greater capacity or power if you require additional storage or backup capacity.
