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Marstek Venus-E-GEN-3.0 – lithium battery 5.12 kWh 51.2 V

Marstek Venus-E-GEN-3.0 lithium battery - 51.2 V LiFePO4 5.12 kWh – Plug & Play AC

€1,200.00
€1,427.99
Tax included
Venus-E-GEN-3.0
6951525704093

The Marstek Venus E 3.0 (Venus-E-GEN-3.0) is a 5.12 kWh AC Plug & Play home battery designed for energy storage and optimising solar self-consumption. It operates on an LFP (LiFePO4) basis with a DoD of 90%, IP65 protection and an operating temperature range of -20°C to +60°C. It features Self-consumption, AI Optimisation, TOU Scheduling and Manual modes, as well as WiFi & RS485 connectivity.

  • Specifications: Nominal capacity 5,120 Wh, nominal voltage 51.2 V, nominal input power 2.5 kW, max. apparent output power 2.5 kVa, weight 64 kg, 480 × 624 × 153 mm.
  • Cells: LFP (LiFePO4) technology with +6,000 cycles and 90% DoD.
  • BMS + communication: BMS, with WiFi & RS485 communication interfaces supported.
  • Compatibility + scalability: AC connection to the grid via domestic socket, and announced scalability up to 46.08 kWh.
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Replenishment in progress – expected arrival on 23 February 2026.

Marstek Venus E Gen 3 / Venus E 3.0 Lithium Battery – 5.12 kWh Plug & Play Home Battery


Optimise your energy, reduce your costs and gain independence

The Marstek Venus E Gen 3 (Venus E 3.0) is a Plug & Play AC home battery designed for modern households that want to get the most out of their solar installation. With its cutting-edge LiFePO₄ technology and smart features, this battery allows you to:

  • Reduce your electricity bills by maximising your solar energy self-consumption.
  • Have a reliable electrical backup for your critical appliances in the event of a power cut.
  • Benefit from quick and easy installation without complicated intervention.
  • Easily scale up with the option to connect multiple units to meet growing energy needs.






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Important notice for our customers in Belgium:An environmental contribution of €167.62 excluding VAT will be applied to the purchase of each Marstek Venus E 3.0 5.12kWh lithium battery.
More information at the bottom of the page.






Why the Marstek Venus E Gen 3 is the number one choice

Performance and reliability

  • Actual capacity: 5.12 kWh LiFePO₄, cycles > 6,000 for exceptional service life.

  • Nominal power: 2.5 kW, peak power: 3.5 kW.

  • Fast automatic backup (<15 ms) to ensure continuous power supply to essential devices.



Quick and easy installation

  • Plug & Play AC technology: connect to a 230 V socket or to the panel via a residual current device.

  • Compatible with all existing photovoltaic systems and smart meters.

  • No complex wiring or inverter modifications required.



Built-in intelligence for maximum savings

  • AI algorithms to optimise charging and discharging according to solar production and your consumption habits.

  • Configurable modes: Self-consumption, AI Optimisation, TOU Scheduling, and Manual.

  • Reduces your electricity costs by up to 30% by taking advantage of off-peak hours and your excess solar energy.



Safety and sustainability

  • Stable and secure LiFePO₄ battery, resistant to deep cycles.

  • IP65 enclosure for dust and water protection, suitable for indoor or outdoor use.

  • Manufacturer's warranty up to 10 years, for complete peace of mind.



Scalability and compatibility

  • Single-phase: up to 3 units → 15.36 kWh

  • Three-phase: up to 9 units → 46.08 kWh

  • Compatible with all PV AC installations, EMS, P1/CT smart meters and home automation integration possible.






Ideal applications

  • Detached houses and flats

  • Optimisation of solar self-consumption

  • Electrical backup for critical equipment

  • Scalable projects for future energy needs




The Marstek Venus E Gen 3 is much more than just a domestic battery. It is a complete solution for your energy independence, combining performance, safety, durability and intelligence. Whether you want to:

  • Reduce your electricity bills by maximising the self-consumption of your solar production,

  • Benefit from a reliable backup to power your essential appliances in the event of a power cut,

  • Store the energy produced by your photovoltaic panels to consume it when you want,

  • Optimise your energy usage according to tariff schedules and your consumption habits thanks to intelligent AI modes,

  • Gradually increase your energy capacity thanks to scalability and the ability to connect multiple units.

Venus E Gen 3 meets all these needs.

Easy to install, it connects directly via its Plug & Play AC technology, without complex intervention or modification of your existing inverter. Scalable and compatible with all photovoltaic installations, it adapts to your house, flat or second home.

Investing in the Venus E Gen 3 means choosing peace of mind, savings and sustainable energy for years to come, while having a powerful tool to intelligently manage your energy on a daily basis.




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Specific information for Belgian customers - Bebat tax

 

As part of our commitment to regulatory compliance and environmental responsibility in Belgium, we would like to inform our customers that the purchase of a Marstek Venus E 3.0 5.12kWh lithium battery is subject to a mandatory environmental levy.

An amount of €167.62 excluding VATmust be added to each battery purchased as a direct contribution to Bebat, the organisation responsible for managing batteries and accumulators in Belgium. This measure complies with current Belgian environmental legislation.



Important: When purchasing lithium batteries, please add the corresponding product "Bebat Marstek Venus E 3.0 environmental levy" according to the number of batteries you order. Otherwise, we will recalculate and invoice the amount after purchase.

This tax only applies to Belgian customers.






FAQ – Marstek Venus E Gen 3.0

1. What is the actual capacity of the Marstek Venus E Gen 3.0? +
The battery offers a usable capacity of 5.12 kWh with high-quality LiFePO₄ technology, guaranteeing more than 6,000 cycles and a lifespan of at least 15 years.
2. How do I install the Venus E Gen 3.0? +
Installation is Plug & Play AC: simply connect the battery to a 230 V socket or to the electrical panel via a dedicated RCD. No change of inverter is necessary and installation can be carried out quickly, even by a private individual.
3. Can the battery provide backup in the event of a power failure? +
Yes. The Venus E Gen 3 provides instant power (< 15 ms) for your essential appliances: refrigerator, internet box, lighting and critical equipment.
4. Can multiple batteries be connected to increase capacity? +
Yes, the battery is scalable:
  • Single-phase: up to 3 units → 15.36 kWh
  • Three-phase: up to 9 units → 46.08 kWh
This allows you to adapt the capacity to your energy needs.
5. Is it compatible with all photovoltaic installations? +
Yes. The Venus E Gen 3 is compatible with all AC photovoltaic systems and P1/CT smart meters. It can also be integrated into home automation systems via Wi-Fi, Bluetooth or open API.
6. What operating modes are available? +
  • Self-consumption: maximises solar self-consumption
  • AI Optimisation: intelligent optimisation based on your habits and solar production
  • TOU Scheduling: scheduled charging according to hourly rates
  • Manual Mode: full manual control
7. What are the advantages of LiFePO₄ technology? +
  • Exceptional longevity (> 6,000 cycles)
  • Excellent thermal and chemical stability
  • Deep discharge up to 90% without loss of service life
  • No maintenance required
8. Is the Venus E Gen 3.0 suitable for all types of homes? +
Yes. It is suitable for detached houses, flats, second homes and mobile homes. Its compact size and plug-and-play installation make it easy to integrate anywhere.
9. What warranty does Marstek offer? +
The Marstek Venus E Gen 3 comes with a 10-year manufacturer's warranty, ensuring peace of mind and long-term reliability.
Venus-E-GEN-3.0
2026-02-23

Data sheet

Cycles
+ 6000
Voltage
48V
Technology
LFP (LiFePO4)
Width
480 mm
Height
624 mm
742 mm
Thickness
153 mm
Nominal mains voltage
220 V / 230 V
LCD screen
LED
THDi (Nominal power)
inférieur à 3 %
Rated capacity
5120 Wh
Protection Degree
IP65
Operating temperature range
-20°C ~ +60°C
Weight
60 kg
Rated output voltage
230V
Power factor (adjustable)
Greater than 0.99 by default (0.8 advance / 0.8 delay)
Cooling
Natural convection - Fanless
Relative humidity range
0-95 %
Maximum operating altitude
2000 m
Rated voltage
51,2 V
Supported communication interfaces
WiFi & RS485
Network connection standards
VDE 4105/0124, TOR R25, NF EN50549-10, C10/110, UNE217001/217002, NTS 631, CEI0-21, PETREE, PN-EN 50549-1/-2
Mains voltage range
187 V ~ 253 V
DOD
90 %
Nominal input power
2,5 kW
Operating phase
L / N / PE
Nominal off-grid power output
2,5 kW
Max. apparent output power
2,5 kVa
THDu
Less than 3% of sales
Battery-AC efficiency Max.
More than 93.5

Specific References

EAN13
6951525704093
MPN
MST-BIE5-2500

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