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    Venus-E 2.5kW
    Plug & Play
    Model-specific connection
    IP65

    Venus-E 2.5kW Plug-In Storage System

    MARSTEK VENUS-E AC-coupled home energy storage with a 5.12 kWh LiFePO4 battery, 2.5 kW on-grid charging and discharge, and 2.5 kW backup output. It supports CT-based anti-feed-in control, peak and off-peak energy shifting, Wi-Fi monitoring and RS485 energy-management integration.

    Good to know: Using the battery as a plug-in unit, running appliances directly from its built-in socket, and having it fully wired into your fuseboard are three different setups — each with its own power limits. Read the plain-English guide.
    Make more of your battery
    Charge it free from the sun

    Add a plug-in solar kit and your battery can store daytime solar for the evening. Tick to add — your battery stays in the order either way.

    How does install work?
    £1,499

    Venus-E 2.5kW

    £1,499

    Buy now — in stock
    In stock · delivered in 3–5 working days

    Sold and fulfilled by PowerXpress LTD, who take your payment and handle delivery, returns and warranty. Plug-In Solar (Plug In Battery Ltd) is their sales partner. Contact PowerXpress · PowerXpress Terms of Sale · Delivery · Returns · Privacy

    Every order includes a free customer portal to track your order, follow delivery & installation, and download your receipt and documents — login sent by SMS the moment you order.

    Key Advantages

    • Buy the unit alone or bundled with batteries
    • Plug-in setup — no rewiring
    • Optional smart meter install for live demand following
    • Full professional installation available

    Technical Specifications

    Model
    MARSTEK VENUS-E
    Battery Capacity
    5.12 kWh (5120 Wh)
    Battery Chemistry
    LiFePO4
    Rated Battery Voltage
    51.2 V (16S)
    Depth of Discharge
    90%
    Battery Current
    60 A
    Cycle Life
    >6,000 cycles at 25°C
    On-grid Input / Output
    2.5 kW
    Grid Connection
    Single phase L / N / PE
    Rated Grid Voltage
    220 / 230 V
    Grid Voltage Range
    187–253 V
    Grid Frequency
    50 / 60 Hz
    Rated Grid Current
    11.4 A input / 10.9 A output
    Maximum Grid Current
    13.4 A
    Power Factor
    >0.99 default; 0.8 leading–0.8 lagging adjustable
    Grid Current Distortion
    THDi <3%
    Backup Output
    2.5 kW / 2.5 kVA
    Backup Output Current
    11.3 A max
    Backup Output
    220 V · 50 / 60 Hz
    Backup Transfer
    20 ms with optional Smart Backup Box
    Output Voltage Distortion
    THDu <3%
    Maximum Efficiency
    >93.5% battery to AC
    Anti Feed-in
    CT-based, 100% self-consumption control
    Energy Management
    RS485 EMS
    Ingress Protection
    IP65
    Operating Temperature
    −20°C to +60°C
    Relative Humidity
    0–95%
    Cooling
    Natural convection
    Maximum Altitude
    2,000 m
    Dimensions
    600 × 742 × 227 mm
    Weight
    60 ±0.5 kg
    Display
    LED
    Connectivity
    Wi-Fi and RS485
    Protection Class
    Class I
    Isolation
    Non-isolated
    Compliance
    EN 50549-1 · IEC/EN 62109-1/-2 · IEC/EN 61000 series · EN 300 328 · EN 301 489

    Downloads & Documentation

    MARSTEK VENUS-E — Product Brochure & Datasheet
    venus-e-brochure.pdf

    Have Questions? Get in Touch

    Got questions? Call us

    +44 7782 218686

    Or tap the chat icon bottom-right — we'll get straight back to you.

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