Marstek Venus 3.0 E 5.12 kWh Home Battery – Plug & Play

The Marstek Venus E 3.0 is a compact, quiet and smart AC-connected plug & play home battery. Plug it in, connect the P1 or CT meter and the app regulates charging/discharging based on your consumption, solar yield and (dynamic) tariffs. Ideal if you want to start with storage without major installation and want to scale up later.

What’s new in Venus 3.0?

• More compact & lighter with redesigned, sleek housing
• LAN/UTP port next to wifi/Bluetooth for stable data connection
• Wall mounting bracket as standard (instead of wheels)

Power & use

• Capacity per unit: 5.12 kWh (LFP)
• On-grid discharge via plug: 800 W
• On separate group (by specialist installer): charge/discharge up to 2.5 kW
• Emergency power/off-grid output: up to 2.5 kW
• AC charging: up to 2.5 kW
• Smart control: with P1 reader or 3-phase CT meter for zero injection and optimised self-consumption; app modes Self-consumption, AI optimisation and Manual
• Scaling up: multiple units per phase possible (typically max. 3 per phase → 15.36 kWh and 7.5 kW on that phase)

Radiant green tip
Start on plug (800 W). Want to charge/discharge faster or feed a small back-up distributor? Have a separate group installed and set 2.5 kW according to local rules.

Main advantages

• Plug & play: ready to operate in minutes; perfect with existing PV with string inverter
• On-board backup: power critical devices in case of failure (up to 2.5 kW)
• Robust & safe: LiFePO₄ (LFP), > 6,000 cycles, 10-year warranty
• IP65 enclosure: can be placed indoors or sheltered outdoors

Core specifications (E 3.0 – 5.12 kWh)

• Battery chemistry: LiFePO₄ (LFP)
• Usable capacity: 5.12 kWh
• Charging/discharging power: 800 W via plug; up to 2.5 kW on separate group
• Emergency power output: max. 2.5 kW
• Control/IO: Wi-Fi, Bluetooth, LAN/UTP, RS-485
• Meters: P1 reader, 3-phase CT meter; compatible with various energy meters
• Scalability: up to 3 units per phase (≈ 15.36 kWh / 7.5 kW per phase)
• Protection rating: IP65
• Warranty: 10 years

Installation in brief

1. Installation: flat and dry; wall or floor installation
2. Connecting: plug into 230 V, pair with app, select mode (Self-use/AI/Manual)
3. Measuring: Link P1 reader or CT meter for zero injection and smart control
4. Upgrade (optional): separate group for 2.5 kW charging/discharging and/or back-up groups