Marstek Venus A 2.12kWh

Marstek VENUS A Balcony Energy Storage System

The Marstek VENUS A Balcony Energy Storage System is an AC-coupled and flexible home battery system with an integrated inverter, ideal for expanding existing PV installations in the Netherlands, Germany, and the rest of the EU.

With 4 MPPTs for up to 2.4 kWp solar panels, 1.2 kW bidirectional AC power, and 1.2 kW emergency power (back-up), the VENUS A makes your home energy autonomous and fully prepared for dynamic energy tariffs and zero-injection control.

Thanks to its plug-and-play architecture and quick installation, this system is the perfect solution for balcony central units and modular energy storage.

Why choose the Marstek VENUS A home battery?

• Universal Compatibility (Plug & Play): Works with any existing PV system via AC coupling, without having to replace your current inverter.

• Integrated solar power: Built-in inverter with 4 independent MPPT trackers for up to 2.4 kWp of solar panels.

• Modularly expandable: Start from 2.12 kWh and expand to 12.72 kWh with up to 5 additional units.

• Fast emergency power: EPS function switches over within 15ms in the event of a power failure to protect critical devices.

• Smart energy management: Supports zero-injection via smart meters (such as Shelly) and AI-driven Time-of-Use optimization.

• Safe and durable: LiFePO₄ cells (> 6000 cycles, 15-year lifespan) with IP65 protection, suitable for both indoor and outdoor use.

Without smart meter

Only suitable for replacement or expansion when a compatible meter is already present.

With CT002

For meters without a P1 port, for smart meters with software older than SMR5.0, and for Belgium (compatible with Synergrid approval). Works with current coils.

What are the specifications of the Marstek VENUS A?

• Model: MARSTEK VENUS A

• Battery capacity (per unit): 2.12 kWh

• Maximum storage capacity: 12.72 kWh (total 6 modules)

• Cell type & lifespan: LiFePO₄ (LFP), DoD 90%, > 6000 cycles (@ 25 °C)

• Max. PV input: 2.4 kW (4 × MPPT)

• Nominal AC power: 1.2 kVA, bidirectional

• Emergency power supply (EPS):

  • 1.2 kVA nominal

  • 1.44 kVA peak (60 s)

• Switching time: 15 ms (EPS)

• Protection: IP65, natural cooling, −20 °C to 60 °C

• Communication: Bluetooth, Wi-Fi, Ethernet

• Dimensions (L × W × H) & Weight: 400 × 285 × 168 mm, 24 kg