Energy Storage


Own your energy, own your future

For all your energy needs

Venus E-mini: Simply Plug & Play. Venus E4.0: Plug & Boost. Venus E MAX : Plug & Turbo

Flexible residential storage, high-input balcony and home applications, and large all-in-one solutions.

Venus E-mini: Simply Plug & Play

Flexible AC-coupled storage for homes with growing energy needs

Venus E best for
Homeowners who want energy cost savings without re-wiring, an energy back up, to store low cost energy for use later or store more energy from an existing solar installation, and wanting expandable storage over time.

The VENUS E Mini installs in moments like a standard appliance using AC-coupled smart technology. It is the World’s Thinnest Plug-in energy storage system at105mm thin & 22kg light. Blends quietly and efficiently into any home environment. Optimized for European households, it stores 2kWh of energy tailored for daily energy savings.

Intelligent Energy Management. The system learns your home’s energy patterns and charges at low-tariff for use when they are high, maximizing your savings. Precise Anti-Feed in Control ensures generated energy stays within your home.

Premium LFP Cells with a 15-Year Design Life. Utilizing ultra-safe Lithium Iron Phosphate chemistry, the VENUS E Mini offers over 10000 deep cycles, ensuring a stable and reliable energy supply for more than a decade.

All-Round Safety. The Integrated Smart Battery Management System provides 24/7 monitoring and six layers of protection, ensuring reliable and safe operation. Military-Grade IP65 Protection for Indoor & Outdoor Use, balconies, garages, garden cabins.

Universal Integration with 100% of Existing Solar Systems. The VENUS E Mini works independently of your solar inverter brand or protocol. It adds storage to any existing system without the need to replace or modify your current setup.

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Venus E4.0: Simply Plug & Boost

Flexible AC-coupled storage to prepare for the future.

Venus E4.0 best for
Homeowners who want more energy independence without re-wiring, an energy back up, to store low cost energy for use later or store more energy from an existing solar installation and wanting expandable storage over time.

5kWh Capacity for Whole-Home Energy Security. With 5kWh usable capacity, the Venus E 4.0 provides longer backup time and greater daily energy shifting capability, perfectly suited for medium to large households looking for true energy independence.

Intelligent Energy Management increases self-consumption rate and reduces electricity bills. High-Efficiency 3kW Bidirectional Inverter optimally matches most household loads. Whole-Home Backup with <10ms Seamless Switch ensures critical appliances (refrigerator, router, etc.) continue running smoothly during power outages.

Industrial-Grade LFP Battery with 10,000+ Cycle Life. Utilizing premium 314Ah Lithium Iron Phosphate cells, the Venus E 4.0 offers over 10,000 deep cycles and a design life of more than 15 years, providing long-term reliable performance.

True Plug & Play Installation in Minutes Thanks with innovative AC-coupled technology  and unique three-in-one interface, installation complete in minutes. Simply hang on the wall or place on the floor and plug it in. Clean and modern look blends into any home environment

VPP – Your Personal Power Plant on Autopilot. Through Virtual Power Plant integration, your VENUS E 4.0 can transform from a home battery into a revenue-generating asset.

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Venus E MAX : Simply Plug & Turbo

World’s First 10kWh All-in-One Plug-in Battery

VENUS E MAX combines a high-capacity 10kWh battery, inverter, and EMS into one compact system for true plug-and-play home energy storage. Delivering longer backup power, greater energy independence

The Easiest Plug-in Battery for PV Retrofit
No Rewiring. No Inverter Replacement. No Hassle.
Upgrade your existing PV system effortlessly. VENUS E MAX with AC coupling, allows you to add storage without modifying your current solar installation.

Class-Leading Plug & Play Performance. Engineered with a powerful 3.6kW bidirectional output, VENUS E MAX supports energy-intensive home appliances while enabling faster charging, smoother energy flow, and more flexible everyday power use.

Power That Grows With Your Home. Expand your system to 10.8kW and 30kWh in minutes via SmartBox parallel operations for flexible, future-ready power expansion.

Portable EV Charger Compatible. Seamlessly compatible with the MARSTEK portable EV charger, VENUS E MAX integrates home energy storage and EV charging into one system, enabling smart charging modes such as solar-first charging, scheduled charging, and off-peak charging for a more efficient and cost-effective EV experience.

Over 10,000 Deep Cycles for Decades of Reliable Use. Powered by 314Ah high-capacity lithium iron phosphate (LFP) cells, the system delivers over 10,000 deep cycles, ensuring long-lasting safety, stability, and reliable performance for home energy storage.

Maximize Your Energy Savings. Turn more of your solar energy into real savings with intelligent storage and energy optimization.

AI-Driven Energy Optimization
Smarter Energy Decisions, Lower Electricity Costs

MARSTEK AI continuously analyses electricity market data, household load patterns and weather forecasts, to optimize your energy usage automatically, maximizing solar self-consumption and reducing electricity costs

Seamless Ecosystem Integration VENUS E MAX integrates seamlessly with major smart home platforms via open APIs, enabling unified control and intelligent coordination of your home energy devices for more efficient energy management.

10-Year Warranty, 15-Year Lifespan
Long-Term Reliability You Can Trust
. Built for durability, VENUS E MAX is designed for up to a 15-year lifespan and backed by a 10-year warranty, ensuring long-lasting performance and peace of mind for your home energy investment.

Ultra-Quiet Operation. Operating at under 30dB, VENUS E MAX runs quietly in the background, ensuring a noise-free environment for your home, whether you are working, relaxing, or sleeping.

Seamless Ecosystem Integration. VENUS E MAX integrates seamlessly with major smart home platforms via open APIs, enabling unified control and intelligent coordination of your home energy devices for more efficient energy management.

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Venus A : Simply Plug & Expand

Modular Battery System up to 12.72 kWh

Start with 2.12 kWh and expand easily up to 12.72 kWh as your energy needs grow. 100% Compatible with Solar Systems. AC-coupled design ensures effortless integration with existing solar installations.

Excellent Anti Feed-In Efficiency with Smart Meter. Automatically monitors and controls energy flow, prevents unwanted energy feedback, maintains accurate metering.

Built Tough with IP65 Rated Protection. Fully protected against dust and water, ensuring reliable operation in almost any environment. Wide Temperature Range from -20℃ to 60℃  Designed to perform reliably in extreme temperatures, ensuring stable operation year-round.

Bluetooth, Wi-Fi & Ethernet Support. Ensure stable and complete data transmission, keeping your system monitored and controlled reliably.

<10 ms EPS Switch. Ensures uninterrupted power by switching to backup in under 15 ms, keeping essential devices running

1500 W Backup Power. Provides reliable backup for essential appliances, with peak output up to 1500 W for short bursts.

1500 W Bidirectional Inverter. Allows both charging from the grid and feeding power back, supporting flexible home energy management.

Modular Battery System up to 12.72 kWh. Start with 2.12 kWh and easily expand up to 12.72 kWh as your energy needs grow.

AI Mode Powered by MARSTEK Intelligence. Optimizes the flow of energy in your home. Automatically schedules charging to maximize self-consumption, reduce electricity costs, and ensure your home always has reliable power.

Smart Control with MARSTEK App. Offers live monitoring and flexible mode selection, keeping your home energy system fully under your control.

100% Compatible with Solar Systems. AC-coupled design ensures effortless integration with existing solar installations.

Wide Temperature Range from -20℃ to 60℃. Designed to perform reliably in extreme temperatures, ensuring stable operation year-round.

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Bill Savings, Carbon Cuts: Up to €1,797 per year and 3,932 kg CO₂.

Important: remember actual results for you will vary depending on individual circumstances.All data is based on ideal test conditions.

1. Power Generation: According to data from MARSTEK’s proprietary EMS platform, a 1000W solar panel in southern Germany can generate up to 1160 kWh annually. This product supports up to 4000W of solar panels, resulting in 1160 × 4 = 4640 kWh/year. Annual energy storage capacity: 15.36 kWh × 365 = 5606.4 kWh. 2. Calculation Assumptions: Self-consumption rate is 85% (source.); Fixed electricity price: €0.40/kWh; Peak-valley price difference: €0.132/kWh. Every 1 kWh of solar power reduces CO₂ emissions by approximately 0.997 kg. 3. Calculation Details: Annual Electricity Cost Savings. = Savings from self-consumption + Savings from AI-optimized charging. = 4640 kWh × 85% × €0.40. + (5606.4 kWh − 4640 kWh × 85%) × €0.132 ≈ €1797. Estimated CO₂ Emission Reduction. = 4640 kWh × 85% × 0.997 ≈ 3932 kg

⚠️ The product’s external appearance and certain design elements are currently undergoing further refinement. The final specifications and design details will be based on the commercially available product.

Own your energy, plug & play today