Eindhoven, the Netherlands – June 30th, 2026: MARSTEK hosted the launch event for its brand-new VENUS E product lineup.

This launch goes far beyond a single product upgrade. Four new models, the VENUS E Mini, VENUS E 4.0, VENUS E Max and VENUS E Pro, were unveiled together, solidifying MARSTEK’s leading position in plug-in residential energy storage and pushing the limits of the plug-in battery market.

VENUS E Mini: Wall-mounted Design for Lightweight Retrofits

• Ultra-slim build: Standard 2 kWh capacity with a total weight of only 22 kg; space-saving slim wall-mounted form factor
• True plug-and-play: AC-coupled design requires no rewiring of existing circuits, with full installation finished in just 5 minutes
• Reliable backup power: 1.5 kW bidirectional charge/discharge (1.8 kW peak), sufficient to cover daily household emergency power demands

VENUS E 4.0: The Optimal Upgrade for Existing PV Systems

• Refined lightweight build: Balanced 3 kW / 5 kWh core configuration, chassis weight cut by 21%, paired with an upgraded segmented display
• Scalable capacity: Built-in SmartBox architecture allows multi-unit parallel connection up to 9 kW / 15 kWh
• Integrated solar-storage-EV ecosystem: Seamlessly compatible with MARSTEK EV chargers for smart charging management, delivering an all-in-one upgrade experience

VENUS E Max: World’s First 10 kWh All-in-One Plug-in Battery

• Groundbreaking innovation: Industry-first integrated 10 kWh plug-in design, 3.6 kW bidirectional charge/discharge, with ultra-fast <10 ms backup power switchover during outages
• Intelligent parallel expansion: SmartBox framework supports interlinked units to freely scale storage capacity and output power
• Complete household energy loop: Natively matched with MARSTEK EV chargers to build a self-sustaining PV-storage-EV residential energy system

VENUS E Pro: Streamlined Cabling to Slash Installation Costs Dramatically

• Simplified wiring: The conventional 16-wire layout is reduced to merely 2 main cables, paired with high-voltage MPPT to boost solar power harvesting efficiency
• Powerful core performance: 2 kW bidirectional inverter (2.4 kW peak), seamless 10 ms power transfer the moment grid power cuts out
• Customizable scalable storage: Capacity adjustable from 2.08 kWh to 12.48 kWh; integrated active DC-DC balancing ensures stable long-term operation

A Full-spectrum Product Line Leading Plug-in Storage Development

Covering entry-level compact units like VENUS E Mini, mainstream PV upgrade solutions like VENUS E 4.0, high-capacity all-in-one batteries like VENUS E Max, and premium high-voltage flagship systems like VENUS E Pro, the VENUS E lineup delivers a full-scenario product portfolio, catering to diverse energy storage needs ranging from small balcony PV setups to full-house high-capacity systems.

MARSTEK has long focused on addressing the core pain points of European installers and homeowners, consistently streamlining installation workflows, lowering deployment expenses, expanding scalable capacity and optimizing product footprint. With the official rollout of the full VENUS E series, MARSTEK will keep advancing residential energy storage adoption through technological innovation, supplying flexible, easy-to-install plug-in storage solutions to accelerate Europe’s energy transition.