Marstek Venus G – 5 kW AC-Coupled Home Battery (Expandable up to 30 kWh)
Smart energy storage with maximum flexibility
The Marstek Venus G is a powerful and future-proof AC-coupled home battery system featuring a built-in 5 kW bidirectional inverter and advanced 500V V-Boost battery technology. Designed for households that want full control over their energy usage, reliable backup power and optimal self-consumption of solar energy.
Thanks to its modular design, the system can be expanded up to 30 kWh, making it suitable for both current and future energy needs.
5 kW bidirectional inverter
The integrated inverter ensures stable performance for daily use and intelligently manages charging and discharging. Multiple household appliances can be powered simultaneously without loss of performance.
Reliable power output
Optimized energy flow
Fully integrated system
Up to 7.5 kW AC PV integration
The Venus G supports up to 7.5 kW AC solar input (5 kW charging and 2.5 kW bypass). It integrates seamlessly with existing PV systems without the need for system modifications.
No inverter replacement required
Ideal for existing solar installations
Smart energy management day and night
Emergency power supply (EPS) – switch-over < 10 ms
In the event of a power outage, the system switches to battery power in less than 10 milliseconds. Essential devices such as refrigerators, internet routers and lighting remain operational.
Automatic backup function
Suitable for critical loads
Seamless power transition
Expandable up to 30 kWh
The modular battery design allows easy expansion from 5 kWh up to 30 kWh, making the system suitable for growing households or increased energy demand.
WireLite – simple AC connection
WireLite enables direct AC connection to existing installations without replacing current inverters, significantly reducing installation time and complexity.
Fast installation
Ideal for retrofit applications
Smart energy control
Smart self-consumption and feed-in limitation
When combined with a smart meter, the system maximizes self-consumption and minimizes grid feed-in, helping reduce energy costs and improve return on investment.
Higher self-consumption
Lower electricity costs
Full control over energy usage
500V V-Boost battery technology
V-Boost DC-DC technology compensates for voltage drops caused by aging or temperature differences, ensuring consistent performance and extended battery life.
AI-powered energy management
The intelligent Marstek energy management system automatically charges during low tariff periods and discharges during peak hours, ideal for dynamic electricity pricing.
App monitoring and connectivity
Real-time monitoring via app with full system control.
Supported connections:
Wi-Fi
Bluetooth
Ethernet
RS485
Open API for third-party EMS integration
Quiet, safe and durable
The system operates at less than 30 dB and is suitable for indoor or outdoor installation.
LFP battery with over 6000 cycles
Minimum 80 percent capacity after 15 years
IP65 protection
Operating temperature from -25 °C to +55 °C
10-year manufacturer warranty
Technical specifications
Type: AC-coupled home battery
Power: 5 kW
Capacity: 5 to 30 kWh
Battery type: LFP
Voltage: 500 V
Protection class: IP65
Communication: WiFi, LAN, RS485, Bluetooth
Warranty: 10 years
