MARSTEK displayed its latest VENUS E 4.0 series 3 kW/5 kWh plug-in micro storage system with a built-in universal plug point and backup port at Intersolar Europe
This product is scheduled to be commercially available in 2026
The company also promoted its VENUS E MAX, VENUS E Mini, B2500D AC, and SmartBox gateway
Balcony plug-in manufacturer MARSTEK ENERGY showcased its latest product portfolio for residential prosumers at Intersolar Europe 2026. The company’s Key Account Manager, Daisy Jiang, gave the TaiyangNews team a tour of MARSTEK’s booth at the event.
The company’s flagship micro-storage system, VENUS E 4.0, is equipped with a 5 kWh lithium-iron-phosphate (LFP) battery bank and a 3 kW bidirectional inverter. It has an integrated digital display that shows real-time backup power and grid connection status, among others, providing prosumers with real-time data. The system features a built-in universal plug point with a universal socket, a backup power port, and a communications cable. Jiang noted that this 3 kW/5 kWh micro-storage system has a higher capacity than the VENUS E 3.0 series (2.5 kW/5.12 kWh). Its capacity can be expanded by using an external gateway, SmartBox. We have covered this new plug-in storage system in detail in a separate article (see MARSTEK Showcases Made-in-US Microstorage System At Intersolar). The product is slated to be commercially available in 2026.
She also highlighted the VENUS E MAX series balcony plug-in system with a rated capacity of 3.6 kW/10 kWh. It is an AC-coupled storage system. During a grid outage, it can deliver up to 3.6 kW single-phase power to the home loads.
The next showcase was the VENUS E Mini series 1.5 kW/2kWh balcony plug-in PV + storage system. It can be plugged into a home plug point via a single cable.
The booth also displayed the B2500D AC series 2.2 kWh plug-in battery for the German market. It features a new design with built-in plug points for a microinverter and emergency backup.
Lastly, she highlighted the single MPPT-based VENUS E PRO, which can be installed with just 2 cables and the SmartBox gateway to expand battery capacity.
According to Jiang, these showcases are easy to sell in the B2B business segment.
