Marstek Venus E– AC-coupled 5.12 kWh solar storage for balcony power plants and PV systems

Pre-order now, delivery by the end of April 2025.

Note: This product is only sold within Germany.

The Marstek Venus-E Balcony Storage 5120Wh AC coupled is the ideal storage solution for balcony power plants and existing solar systems. Its flexible application ensures optimal use of your solar energy and enables a high level of self-sufficiency. The storage system offers a high capacity of 5.12 kWh and a maximum output of 2500 W, allowing you to significantly increase your self-consumption.

Your benefits at a glance

• Bidirectional inverter integrated
• 5.12 kWh capacity – expandable with additional storage
• Simple plug & play installation at the socket
• Emergency power function with up to 2,500 W power
• App control including electricity price monitoring in 46 countries
• Compatible with smart meters (Marstek CT002/CT003 or Shelly Pro 3EM)
• On-Grid & Off-Grid usable
• Anti-feed function for maximum self-consumption
• Over 6000 charging cycles lifespan
• 10-year manufacturer's warranty

Maximum flexibility & compatibility

• Works with all solar systems , regardless of manufacturer or age
• Detects with an optional Smart Meter the excess electricity and stores it
• Up to four memories can be combined in a single-phase system

Emergency power? No problem!

In case of a power failure, the Venus E automatically and delivers up to 2,500 W emergency power – and continues to charge via your solar modules.

Intelligent energy management with the Marstek app

Keep an eye on your electricity consumption at all times, adjust your usage flexibly, and make the most of dynamic electricity tariffs. Venus E charges automatically at low prices and releases energy when prices rise – saving you money!

Technical data at a glance

• Capacity : 5.12 kWh
• Dimensions : 560 mm x 690 mm x 201 mm
• Weight : 60kg
• Mains voltage : 220V / 230V
• Mains frequency : 50/60 Hz
• Battery type : LiFePO4
• Protection class : IP65
• Operating temperature : -20°C to +60°C
• Output power : 800W / 2500W (electrician)

Scope of delivery

• Marstek Venus-E Energycube with 5.12 kWh capacity
• Wall mounting set and wheel set
• 2 meter AC connection cable
• 0.8 meter RS485 cable
• Operating instructions
• 10-year warranty card

A notice:

• Smart Meter is not available

Easy integration into your balcony power plant or PV system

The Venus E Stores excess electricity from your household – no direct connection to PV modules is necessary! Whether it's a balcony power plant or a large rooftop system, the storage system detects the surplus and stores it efficiently.

Two connection options for your balcony power plant:
1. Directly via the Emergency power socket – the generated electricity flows directly into the storage system.
2. With a Smart meter that detects the surplus and automatically charges the Venus.

Integration with smart meters

• Smart Meter is not available

The Marstek Venus-E Balcony Storage 5120Wh AC coupled can be combined with various smart meters to enable precise monitoring of electricity consumption.

• Marstek Smart Meter CT002 for real-time monitoring
• Marstek CT003 for digital electricity meters
• Compatibility with third-party smart meters such as Shelly Pro 3em

More independence, lower electricity costs!

With the Venus E You can make optimal use of solar power, reduce your energy costs, and be well prepared for blackouts. easy installation and smart control you can get started right away – without any complicated technology!