Marstek · Plug & Play home battery
Venus E 3.0
5.12 kWh in one unit. Plug it in.

Buy Venus E 3.0
5.12 kWh in one unit. Plug it into a wall socket and pair it in the app. IP65 for indoors and outdoors.
Optional, incl. VAT, per battery. Power 800 W, with installation up to 2,500 W.
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One cable.Pair in the app.
A Euro plug (16 A) into a wall socket, using the supplied AC cable. Without installation it supplies 800 W to the grid; with professional single-phase installation on a dedicated circuit up to 2,500 W.

Keep whatis left over.
The Venus E 3.0 stores your solar power, so you can use it later in the day.

Charges and dischargeson what your home does.
The included CT003 measures your usage and export. That measurement lets the battery charge and discharge on what your home is doing at that moment. You choose the control mode in the app.

>6,000 cycles.LFP chemistry.
LiFePO4 cells with a usable capacity of approx. 4.61 kWh (90% DoD).

Snow. Rain. Frost.
IP65, suitable for indoors and outdoors. The operating temperature runs from −20 to +55 °C. Follow the placement instructions in the manual.
Power during an outage.Up to 2,500 W.
A separate backup output (Euro socket): 2,500 VA continuous and 3,500 VA briefly for 10 seconds. Only what you connect to it receives power.
Up to three units per phase.
With a SmartBox it can be nine across three phases, 46.08 kWh in total.
LAN, WiFi, Bluetooth, RS485.
You pair and control it in the Marstek app.
About this product.
Choose the Marstek Venus E 3.0 with P1 meter if you want a plug-in battery that can read your usage and export through the included CT003 meter. The only difference from the version without a meter is that P1 meter: the battery itself is the same.
The Marstek Venus E Gen 3.0 stores your solar power. It plugs into a household socket and is paired in the app; the manual asks for a professional to install or check the setup. Without installation it supplies 800 W to the grid; up to 2,500 W with professional single-phase installation on a dedicated circuit. With the SmartBox, the brochure lists a three-phase setup of up to nine units (22.5 kW, 46.08 kWh).
Specifications.
Documents
Specifications according to the manufacturer. Prices include VAT.
Install help
Video and manual
Flip book: the installation in a minute
Use the video and manual for this model. Not every video is a complete Dutch guide. Read the caption.
Step-by-step: install a home battery yourselfIs this right for you?
The Venus E 3.0 with P1 meter suits you if you want a plug-in battery that can read your usage and export through the included CT003 meter.
Good to know
- Plug & play: a Euro plug (16 A) into a wall socket, using the supplied AC cable. You pair it in the app.
- Without installation it supplies 800 W to the grid; up to 2,500 W with professional single-phase installation on a dedicated circuit.
- It is a single upright unit of 480 × 153 × 624 mm and 60 kg. Place it upright and keep the clearance given in the manual.
- You expand with extra units side by side: up to three per phase, up to nine across three phases with a SmartBox.
- The CT003 P1 meter is included in this version. A version without the meter is also available.
Frequently asked questions.
Can I connect the Venus E 3.0 myself?
Yes, the basic setup is plug & play: plug it into a wall socket and pair it in the app. That gives 800 W to the grid. For up to 2,500 W, choose professional single-phase installation on a dedicated circuit.
Does more capacity also mean more power?
No. Capacity (kWh) is the amount of stored energy, power (W) determines how fast you supply. The Venus E 3.0 stores 5.12 kWh and supplies 800 W to the grid, or up to 2,500 W with professional installation.
Can I add another Venus E later?
Yes. You can link up to three units per phase. With a SmartBox that can grow to nine across three phases, 46.08 kWh in total.
Can the Venus E stand outside?
Yes, the unit is rated IP65 and, according to the specifications, suitable for indoor and outdoor use. The operating temperature range is -20 to 55 °C.
Can it supply power during an outage?
The Venus E has a separate backup output (Euro socket): 2,500 VA continuous and briefly 3,500 VA (10 seconds). Only what you plug into it receives power. Never connect the grid and backup sockets to the mains at the same time.
What does the included P1 meter do?
The CT003 measures your usage and export. That measurement lets the battery charge and discharge based on what your home is doing at that moment. You choose the control mode in the app.




