Product Overview Venus E 3.0

Annual savings up to €1,310

AI-supported control and real-time electricity prices help plan charging and discharging for when energy costs are most favourable.

Annual energy savings
Easy integration

100% compatible with existing PV systems

Connect Venus E 3.0 to an existing grid-tied solar installation without replacing the inverter or rebuilding the system.

Compatible with existing PV systems
Backup exit

Up to 2,500W reliable backup power

A separate backup connection keeps essential appliances like lighting, routers, and refrigerators running during a power outage.

Reliable backup output
Marstek app

Multiple modes for each energy strategy

Switch between AI optimization, self-consumption, and manual control to match how your household uses energy.

Energy Modes in the Marstek App
Dynamic rates

Smart energy management starts with AI

Venus E 3.0 can combine pricing data from platforms such as Nord Pool, Tibber and Octopus Energy with consumption patterns, battery status and weather forecasts.

AI energy optimization with dynamic tariffs
Adaptive control

No feed-in with smart meter scheme

Real-time measurement and adaptive output help prevent the export of excess solar energy to the grid.

No feed-in with smart meter regulation
Flexible ecosystem

Broad smart meter compatibility

Support for leading smart meters enables accurate measurement and efficient adaptive control in various home energy systems.

Smart meter compatibility
Built for real homes

Reliable operation down to -20°C

The IP65 casing protects the system from rain and dust, while the temperature range is suitable for demanding outdoor conditions.

IP65 protection for outdoor use

Smart, silent and built to last

Open API for EMS Integration

Open API for EMS Integration

Connect with platforms like Home Assistant and ioBroker for flexible automation, custom control, and access to your own energy data.

Fluisterstille werking

Fluisterstille werking

Natural convection cooling keeps noise levels below 30 dB, making the system suitable for daily living environments.

Long-life LFP battery

Long-life LFP battery

More than 6,000 deep cycles, an expected lifespan of up to 15 years, and a 10-year warranty offer long-term peace of mind.

Technische gegevens

Battery

Rated voltage 51.2 V
Energy capacity 5,120 Wh / 5.12 kWh
Capacity 100 Ah
Battery Chemistry LiFePO4
Lifetime in cycles > 6,000 cycles at 25°C
Depth of discharge 90%

AC mains connection

Nominal input power 2.5 kW
Output power 0.8 kW standard / 2.5 kW premium
Mains voltage 230 V, 187-253 V
Nominal frequency 50 Hz
Maximale ingangsstroom 10.9 A
Connection Euro 16 A, 3-pin mains plug
Total harmonic distortion < 3%

Backup exit

Rated output power 2.5 kVA
Maximale output 3.5 kVA for 10 seconds
Uitgangsspanning 230 V / 50 Hz
Uitvoer stroom 10.9 A
Total Harmonic Distortion < 3% lineair load
Battery-to-AC efficiency > 93.5%

System and environment

Beveiligingsclassificatie IP65
Cooling Natuurlijke convectie, ventilatorloos
Bedrijfstemperatuur -4°F to +131°F
Communication Wi-Fi and RS-485
Dimensions 620 mm (H) × 480 mm (W) × 160 mm (D)
Weight 63 kg
Certifications EN50549-1, IEC62040, IEC62477

What's in the box

Venus E 3.0 Battery
x1

Venus E 3.0 Battery

power cable
x1

power cable

User Manual
x1

User Manual

Specifications and expected savings are based on information from the manufacturer and ideal usage conditions. Actual results may vary due to tariffs, solar yield, household consumption, installation, and local regulations.