Marstek Venus A 2.12kWh all-in-one PV storage with 4 MPPT2.12kWh LFP all-in-one storage with four 60V MPPT inputs and 1.5kW inverter

Overview

Venus A combines four MPPT inputs, a 2.12kWh LFP battery and a bidirectional inverter in one IP65 housing of 26kg. Up to 2,400W of PV modules connect directly with MC4 plugs, one module per 16A input, and the unit feeds the home with 800VA by default or 1,500VA where permitted. A Schuko backup socket supplies 1.2kW during outages, with peaks of 1.44kW. Up to five expansion batteries raise capacity to 12.72kWh, and charging from the grid at up to 1,500VA lets the system use low dynamic-tariff prices.

• Four MPPT inputs, 2,400W PV, MC4 connectors
• 2.12kWh LFP base, up to 12.72kWh
• 800VA default or 1,500VA grid output
• 1.2kW backup socket, 1.44kW peak
• Wi-Fi, Bluetooth and Ethernet
• IP65, -20…+60°C, 10-year warranty

How it works

Venus A brings solar charge controllers, an LFP battery and a microinverter together in one 26kg housing. PV modules plug directly into four independent MPPT inputs, each with its own 16A limit, and the integrated inverter feeds the home through a PECO-S-BM grid connector. Because the inverter is bidirectional, the battery can also charge from the grid at up to 1,500VA, for instance when dynamic tariffs are low or negative.

The unit is also AC-coupled to the home circuit, so with a smart meter it can store surplus from an existing PV system as well as from its own panels. Marstek states that the battery keeps 80% of its capacity over 15 years of use and covers the unit with a 10-year warranty.

Key features

Each MPPT input accepts 16–60V and starts at 22V, so the 60V limit means modules connect one per input rather than in series strings; the combined limit is 2,400W. The 41.6V battery (13 LFP cells in series) is rated for more than 6,000 cycles at 25°C and 90% depth of discharge. Up to five expansion batteries of 2.12kWh can be added to the base unit, taking capacity to 12.72kWh. A Schuko backup socket supplies 1.2kW continuously, with peaks of 1.44kW, when the grid is down.

Installation and compatibility

The base unit measures 450×340×220mm and weighs 26kg; each expansion battery measures 450×340×168mm and weighs 19kg. Both are IP65-rated with natural convection cooling, protection class I and overvoltage category DC II/AC III, for use from -20 to +60°C. The grid output is set to 800VA by default and can be raised to 1,500VA where the local rules on plug-in systems permit it. Marstek advises that electrical connection and commissioning be carried out by a qualified person in line with local regulations.

Monitoring and settings

The Marstek app configures the system over Bluetooth, Wi-Fi or Ethernet and shows energy flows in real time. In self-consumption mode a smart meter on the main panel lets the unit match its output to household demand and avoid export. The AI mode, based on MARSTEK Intelligence, uses dynamic tariff prices to decide when to charge and discharge, charging automatically when prices are low or negative.

Questions and answers