Marstek Venus E 3.0 | 5.12 kWh

Marstek Venus E – 5.12 kWh LiFePO₄ AC-Coupled Energy Storage System

The Marstek Venus E is a high-performance 5.12 kWh LiFePO₄ AC-coupled energy storage system designed for seamless integration with any type of PV system. With up to 2.5 kW of on-grid and backup power, the system supports full home backup in both single-phase and three-phase configurations.

The system is expandable up to 4 units per phase, offers plug-and-play installation, is compatible with smart meters (CT003/Shelly), and supports anti-feed-in for 100% self-consumption. With a lifespan of >6,000 cycles, connectivity via LAN / RS485 / Wi-Fi / Bluetooth, and an open API/Modbus protocol (EMS-ready), the Venus E offers scalable and intelligent energy management for both residential and commercial applications.

New in the Venus E – Version 3.0

The 3.0 version includes several improvements over previous models, including:

• Smaller and lighter design

• Wall mounting option

• New Ethernet communication (faster, more stable and installer-friendly)

Performance & Capacity

• 2500 W on-grid AC output power

• 2500W fast charging, full charge in approx. 2 hours

• 5.12 kWh LFP battery with over 6000 cycles and a 15-year lifespan

• Scalable up to 3 units per phase, good for 7.5 kW output / 15.36 kWh per phase

PV & Smart Integration

• Compatible with any existing PV system

• Supports anti-feed-in and 100% self-consumption

• Works with Marstek CT003 / Shelly smart meters for AI optimization

• Prevents energy waste thanks to real-time energy management via smart meter

• Integrates with external EMS via Open API / Modbus / LAN / RS485 / Wi-Fi / Bluetooth

Emergency power & grid interaction

• Provides 2500W backup power within 12ms (UPS function)

• Supports full home backup in both single-phase and three-phase systems

• Suitable for intelligent energy trading (grid interaction for profit optimization)

Installation & Sustainability

• Plug-and-play installation in 5 seconds

• IP65 waterproof and weatherproof

• Works smoothly at extreme temperatures down to -20 °C

• Compact and stylish design, suitable for indoor and outdoor mounting

Reliability & Warranty

• Designed for long-term use in residential and light commercial applications

• High reliability thanks to LFP technology and professional integration

Modes

AI-driven optimization

Uses artificial intelligence to analyze energy consumption patterns and market prices. This allows for the development of smart charging strategies that reduce costs, increase savings, and improve energy efficiency.

Smart self-consumption

With integrated smart metering, the system monitors household energy consumption in real time. It intelligently adjusts charging and discharging behavior to maximize efficiency and prevent energy waste.

Flexible manual operation

Offers the ability to manually set schedules and customize charge and discharge preferences for maximum control.