Marstek Venus E 3.0 AC-coupled energy storage system – system overview

MARSTEK · ALL-IN-ONE PACKAGE

Marstek Venus-E Gen 3.0 5,12 kWh AC coupled All-In-One Storage System

Name: Marstek Venus-E Gen 3.0 5,12 kWh AC coupled All-In-One Storage System
Brand: Marstek
Price: 1199.00 EUR
Availability: OutOfStock
Rating: 5.00 (1 reviews)

SKU: 14013

Storage capacity: 5,12 kWh; Product Information
PV/charging input: AC coupled; Product Information
Protection class: IP65K; Marstek Venus E Gen 3.0
Wireless connection: WiFi, LAN (Gen 3.0), RS485; GENERAL

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Product description

Marstek Venus-E Gen 3.0 5,12 kWh AC-coupled all-in-one storage system

Marstek Venus E connection diagramFor the specific pin assignment, the supplied user manual and the current manufacturer's documentation are authoritative; there you will also find the Marstek Venus E connections and technical data.

When buying only through authorized dealers you enjoy a 10-year warranty. We are official dealers from Marstek in Germany: https://eu.marstekenergy.com/de-de/pages/dealers

Delivery:

1x Marstek Venus-E GEN 3.0 Balcony Power Plant Storage
1x mounting accessories for floor or wall mounting
1x AC connection cable
1x User's Guide

The Marstek Venus-E 3.0 opens up new possibilities for AC-coupled home storage systems. With a 5,12 kWh LiFePO₄ battery (LFP), the energy from your existing photovoltaic system can be optimally utilized without replacing the inverter or making any changes to the solar system. Thanks to plug & play, the system is ready for use in just a few minutes; simply connect and start. Thanks to its compact design with 38,5% With less volume compared to the previous version, the unit blends inconspicuously into living or technical rooms.

Product Features

--High savings: Up to €1.257 per year through optimized self-consumption and dynamic tariffs
--Powerful: 2,5 kW AC input and output, upgradeable to 2,5 kW feed-in power
--Extendable: Up to 3 units in single-phase operation → 7,5 kW / 15,36 kWh
--Reliable emergency power supply: 2,5 kW via dedicated backup output
--Intelligent management: AI mode, self-consumption and manual mode via MARSTEK app
--Compatible: Smart meter support for zero feed-in
--Robust & durable: IP65, whisper-quiet <30 dB, ≥6.000 cycles at 80% remaining capacity
--Flexible: WLAN, LAN, RS485, open API/Modbus for Home Assistant or ioBroker

The Marstek Venus E 3.0 is the latest generation of the AC-coupled home storage system and impresses with a more compact, lightweight design and an optimized internal structure. Featuring a high-quality die-cast aluminum housing, the Venus E 3.0 requires 38,5% less space and is 7,4% lighter than its predecessor, while increasing efficiency by approximately 5%. Internal cabling has been reduced by 50% thanks to modern printed circuit board technology, increasing reliability and simplifying maintenance.

Connectivity has been significantly expanded: Two RJ45 ports, one RS485 interface, and one LAN port enable stable and secure integration into existing energy management systems. At the same time, the Marstek Venus E 3.0 It is easy to install via a 230V socket and can be modularly expanded to up to 138 kWh, so that it can be flexibly adapted to different energy requirements and ensures a future-proof, efficient energy supply.

Mini Power (New Power GmbH) is an official distributor of Marstek in Europe and is committed to selling the original products of the Marstek Venus-E GEN 3.0 AC-coupled energy storage system.

Matching accessories and related products

AC home storage for maximum savings

The Marstek Venus-E GEN 3.0 is a compact, AC-coupled home storage system with a 5,12 kWh LiFePO₄ battery that integrates seamlessly into existing PV systems. Featuring plug-and-play installation, intelligent AI-driven energy management, flexible expandability up to 7,5 kW/15,36 kWh, reliable backup power, and a robust IP65 enclosure, it offers high efficiency, maximum savings, and future-proof flexibility for modern households.

Quick start thanks to plug & play

The Venus Gen 3.0 is ready to use in just 5 seconds – simply connect it via AC cable, without any tools, configuration or waiting time.

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Reliable communication with LAN connection

In addition to Wi-Fi and Bluetooth, the Venus Gen 3.0 now also offers a LAN port for stable, interference-free communication – ideal for thick walls or multiple radio signals.

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Variants

Datasheet & Instructions

Verified product-related documents and instructions.

01 Marstek Venus E 3.0 Datasheet - German Datasheet · German 02 Marstek Venus C/E - User Manual - German Instructions · German 03 Marstek Venus C/E Unit Certificate - German Certificate / Declaration of Conformity · German 04 Marstek Venus C/E NA Protection Certificate - German Certificate / Declaration of Conformity · German

Technical information

The values that determine the purchase.

GENERAL

input power 2,5 kW (upgradeable)

capacity 5.120 Wh

Wireless connection WiFi, LAN (Gen 3.0), RS485

Dimensions 560 × 690 × 201 mm

charging temperature 0 ° C to 45 ° C

Technical information

PV/charging input AC coupled

Storage capacity 5,12 kWh

Compatibility Marstek

System concept All-In-One

Marstek Venus E Gen 3.0

Protection class IP65K

Dimensions (WxHxD) 560 × 690 × 201 mm

Weight approx. 60 kg

37.000+ installed balcony power plants

Since 2022 by your side every step of the way

30 years Warranty on solar panels

11.000 kWh in battery storage systems

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Why Mini Power

Mini Power helps you choose balcony power plants, storage systems, solar panels, and suitable accessories. Product information, scope of delivery, and compatibility are clearly presented so you can select a system that suits your location and energy needs. If you have any questions, you can contact us directly at info@miniminipower.com.

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Frequently asked questions

Question & Answer

Answers to frequently asked questions about the product, order, and delivery.

What is the Marstek Venus-E GEN 3.0 and what is it used for?

The Marstek Venus-E GEN 3.0 is an AC-coupled home storage system with a 5,12 kWh LiFePO₄ battery. It optimizes the self-consumption of your existing photovoltaic system – without replacing the inverter or making any changes to the solar system.

How easy is it to install the Venus-E GEN 3.0?

Thanks to plug-and-play technology, the system is ready to use in just a few minutes. Installation is tool-free and requires only one cable – plug in, start, and you're done.

What savings does the Marstek Venus-E GEN 3.0 offer?

The combination of self-consumption optimization and dynamic electricity tariffs can result in annual savings of up to €1.257 – while simultaneously relieving the strain on the electricity grid.

How powerful is the Venus-E GEN 3.0 in daily use?

The unit offers 2,5 kW AC input and output power and can be expanded to 2,5 kW feed-in. If required, up to three units can be cascaded – for up to 3 kW / 7,5 kWh.

Can the Venus-E GEN 3.0 provide power in an emergency?

Yes. The system provides 2,5 kW of emergency power via a dedicated backup output—reliable in the event of power outages or grid problems.

Which operating modes are available?

The Venus-E GEN 3.0 can be conveniently controlled via the MARSTEK app. It offers an AI-based automatic mode, self-consumption mode, and manual mode – for maximum control.

Is the Venus-E GEN 3.0 compatible with smart meters?

Yes, it supports leading smart meters, enabling precise consumption measurement, zero feed-in, and adaptive energy distribution—ideal for modern energy management systems.

How durable and quiet is the system?

With an IP65 protection rating, whisper-quiet operation below 30 dB, and over 6.000 charging cycles at 80% remaining capacity, the Venus-E GEN 3.0 is designed for long-term, quiet use.

What connection and integration options does the Venus-E GEN 3.0 offer?

The unit features Wi-Fi, LAN, RS485, and an open API/Modbus – perfect for integration into smart home systems such as Home Assistant or ioBroker.

Didn't find the answer? Write to us at info@miniminipower.com.