
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.




The Marstek Venus E 3.0 5.12 kWh is a next-generation home battery, specially developed for users who value reliability, efficiency, and expandability. With a renewed design, improved connectivity, and compatibility with previous versions, this battery is a suitable choice for both new installations and the expansion of existing systems. The 3.0 version demonstrates that compact power and smart integration can go hand in hand.
Key Features
Fully recessed glass front panel – reduces the risk of damage during unpacking or installation.
Direct network connection: thanks to the RS-485 port and UTP connection, the Venus E 3.0 can be connected via a wired data cable. This is ideal for stable communication with external devices or home automation systems.
Flexible wall mounting: the battery comes standard with a wall bracket, allowing for easy wall mounting for a neat and space-saving installation.
Compatible with previous versions: the Venus E 3.0 works seamlessly with Marstek V1 and V2 batteries. Different versions can be connected and controlled together via the app.
Modern and robust design: the housing has been redesigned with a sleek and functional appearance. Please note: unlike the V2, the V3 does not have integrated handles or wheels.
Space-saving and powerful: thanks to its compact construction and smart layout, the Venus E 3.0 is easy to install, even in smaller technical rooms or storage areas.
Technical specifications
Nominal voltage: 51.2 V
Capacity: 5.12 kWh
Lifespan: more than 6000 cycles at 90% DoD
Dimensions: 620 mm (H) x 480 mm (W) x 160 mm (D)
Weight: 63 kg
Free and fast delivery in the Netherlands.
10-year manufacturer's warranty.
Expert support before and after purchase.

Marstek Venus E 3.0 – Plug & Play Home Battery 5.12 kWh

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

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

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

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

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.

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

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

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


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

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

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.



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.