Frequently Asked Questions about Venus E 3.0
How do I activate the P1 port on my smart meter?
Fluvius: Your P1 port can be activated free of charge via their online portal here.
Sibelga: The P1 port is enabled by default in Brussels. If not, it can be activated free of charge by contacting Sibelga by phone (025494100).
Ores: Your P1 port can be activated by contacting Ores (078157801). Remote activation processing fees are €25.
If your digital meter is not yet installed, you can request free activation during installation.
Resa: Free activation via your myResa account.
What is the Bebat fee for the Marstek Venus E 3.0 home battery?
In Belgium, Bebat finances battery recycling via a mandatory environmental contribution.
For the purchase of a Marstek Venus E 3.0 lithium home battery (58 kg), this environmental fee is €167.62 excl. VAT (€202.82 incl. VAT).
This one-time amount, based on the statutory rate of €2.89/kg, ensures eco-friendly end-of-life processing and is transparently included on your invoice.
More information on the Bebat website here.
What is the purpose of a home battery?
A home battery stores excess electricity produced by your solar panels when you don’t consume it immediately. It can then supply this stored energy when your electricity demand increases or when solar generation drops. The main objective is to maximize your self-consumption and reduce electricity purchased from the grid.
Is the Marstek Venus E 3.0 compatible with my existing solar panel system?
In most cases, yes. The Venus E 3.0 is an AC-coupled battery system and can generally be retrofitted to an existing photovoltaic installation without replacing your existing solar inverter. A prior check of your electrical system, your meter, and your energy requirements is always recommended.
Do I need to replace my existing solar inverter?
No, not in a standard setup. The battery is designed as an add-on to existing systems and generally does not require replacing your solar inverter. Final compatibility depends on the specific electrical layout of your home.
What capacity does a Venus E 3.0 provide?
A single unit provides a nominal capacity of 5.12 kWh. Depending on your energy needs, multiple units can be combined to increase total storage capacity, subject to technical compatibility and suitable installation configuration.
Can I install multiple batteries?
Yes, multiple units can be installed. Total capacity, available power, and the allowable number of units depend on your electrical installation, whether it is single-phase or three-phase, and applicable technical limits. A technical review is recommended prior to placing a multi-unit order.
How much power can the battery deliver?
The Venus E 3.0 is rated for a continuous output of up to 2.5 kW in standard configuration, with higher peak power available for limited durations. The actual usable power depends on your installation layout, connection type, and configured settings.
Does the battery work during a power outage?
The battery features a dedicated emergency backup output, but this does not mean the entire home is automatically powered during a blackout. Only specific devices or circuits connected to the backup output will receive power. A tailored electrical evaluation is required if you wish to configure a structured backup solution.
Can I plug the battery into a standard wall socket?
The Venus E 3.0 is designed as a 230 V Plug & Play solution. However, the condition of your home electrical system, the dedicated circuit, safety breakers, and applicable regulations must be verified. Consulting a certified electrician is recommended for any permanent electrical connection.
Do I need a P1 meter or CT clamps?
While not strictly mandatory in every setup, it is strongly recommended to optimize battery operation. A P1 meter or CT current clamps allow real-time monitoring of energy flows between the home, the grid, and solar panels to optimize charging and discharging schedules.
Can I monitor and control the battery from my smartphone?
Yes. The Venus E 3.0 connects via Wi-Fi to the Marstek mobile app to track real-time performance and adjust energy management settings. Feature availability depends on the product firmware, app version, and internet connectivity.
Can the battery be installed outdoors?
The Venus E 3.0 features an IP65 protection rating. It should nonetheless be placed in a stable, suitable, and accessible location in accordance with manufacturer guidelines. An IP65 rating does not mean the unit can be left completely unsheltered in extreme weather conditions.
Is professional home installation mandatory?
No, not necessarily. Some customers prefer a Plug & Play setup when their home electrical installation and technical know-how allow. However, professional home installation is recommended if you desire full verification of your circuits, configuration, and a clean, safe setup.
What is included in the home installation service?
Installation includes only the services explicitly detailed in the offer or at checkout. Prior to the appointment, the customer must ensure the installation area is accessible, safe, and suitable. Any additional electrical work, panel modifications, extensive cable routing, or corrections to existing wiring not originally planned may require a supplementary quote.
What location requirements should I plan for?
Plan for a stable, dry, accessible, and adequately ventilated location within reasonable proximity of the planned connection point. The battery must remain accessible for operation, maintenance, and proper airflow. If in doubt, feel free to send us photos of the proposed space prior to ordering or technician arrival.
Do you deliver everywhere in Belgium?
Yes, SmartProsumers delivers across Belgium to the address provided during checkout. Please verify your address carefully and ensure someone is available to receive the delivery if required by the carrier.
What should I do if my package arrives damaged?
Inspect the condition of your package upon delivery. In the event of visible damage, opened packaging, or missing items, immediately note precise reservations with the delivery carrier and contact our customer support team with photos of the parcel, shipping label, and damaged item.