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Marstek VENUS D ESS | Inverter + Battery | Full Set

4kW 4 MPPT Balcony ESS with 2.2kW AC-Coupling  Plug & Play — Installation in Just 5 Minutes 4 MPPT for Max.4000W Solar Input 2200W Bidirectional Power 2200W Backup Power, Peak...
Regular price From HK$13,800.00
Regular price Sale price From HK$13,800.00 (-0%)
Battery Options: Battery × 1

Adaptive Energy Storage Unit

Number of Energy Storage Unit

Total Capacity of the Product

Life Cycle

Battery Type

Depth of Discharge

Battery Capacity

MST-E2.5ST-D

6pcs (Max.)

2.56kWh ~ 15.36kWh

> 6000 (25°C )

LiFePO4

90%

50Ah

Maximum Input Power

MPPT Operating Voltage Range

Maximum Input Current (Single Channel)

MPPT Track Number

MPPT Efficiency

4kW

25V ~ 55V

32A

4

99.80%

Rated Output Power

Peak Output Power

Rated Output Voltage

THDu (Linear Load)

2.2 kVA

2400 VA, 60s

230 V

< 3%

Rated Output Power

Working Phase

Rated Grid Voltage

Rated Grid Frequency

Rated Grid Output Current

Power Factor

THDi

2.2 kVA / 0.8 kVA & 2.2 kVA

L / N / PE

230 V

50 Hz

9.57 A / 3.48 A & 9.57 A

> 0.99 (default), 0.8 lagging... 0.8 leading (adjustable)

< 3%

Ambient Temperature Range

Relative Humidity

IP Level

Cooling Method

Maximum Altitude

Grid Connection

Photovoltaic Connection

Off-grid Port

Display

Communication

-20 °C ~ 60 °C (Storage -30°C ~ 85°C

0 ~ 95 %

IP65

Natural Cooling

2000 m

BC01

MC4

UK Socket

LED

Bluetooth, Wi-Fi & RS-485, EtherNet

See the full specification

Maximized Solar Capture, Minimized Waste

2.2kW bidirectional AC flow lets you charge when rates are low, and power your home when they rise.

Ultimate Power Flow with 2.2kW Bidirectional Inverter

4 MPPTs intelligently track multiple PV strings—maximizing output from every roof, every angle, every hour, with up to 99.8% efficiency.

2.2kW Backup 2.5kW Peak

Stay powered during outages. 2.2kW for essentials, 2.5kW peak when you need it most.

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<15ms EPS Switch

Provides reliable backup for essential appliances, with peak output up to 1440 W for short bursts.

Superior Compatibility, Seamless 5-Minutes Plug-and-Play

Plug in, power on—live in minutes, zero hassle.

Scalable Storage, Always Enough

Stack design from 2.56kWh to 15.36kWh, tailored to your needs.

Your Whole Home, Fully Powered

Power your entire home by linking multiple MARSTEK VENUS D modules with the SmartBox.

up to 6.6 kW / 46.08  kWh on single-phase or

19.8 kW / 138.24  kWh on three-phase.

Self-Consumption, All Day Long

Solar powers your home first, with any excess stored instantly.
AI schedules smart charging during off-peak hours, while the Smart Meter ensures nothing is wasted.
From day to night, your energy flows efficiently—no feed-in, no interruption.

Energy, Perfected by AI

MARSTEK VENUS D makes your energy smarter. By learning from your location, weather, and energy usage, it predicts how much solar energy you'll have each day. It then adjusts your system to use that energy wisely, saving you money and reducing waste.

Supreme Anti Feed-In Efficiency with Smart Meter

Real-time load tracking ensures every extra ray is stored, not wasted. It knows when your home needs more—and when to save the rest, maximizing self-consumption effortlessly.

Total Energy Control with MARSTEK APP

MARSTEK App monitors battery health, tracks real-time energy flow, and lets you set schedules, wattage limits, and automation rules.
From solar surplus to peak pricing, it adapts to your needs.

Apple - App Store

Google Play

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Built to Endure, over 6000 Cycles Strong

With automotive-grade LFP cells, MARSTEK VENUS D offers 6000+ cycles with 80% capacity retention over 15+ years. Backed by a 10-years warranty and ongoing support, it delivers long-lasting, safe, and efficient performance.

Multiple Connectivity, Complete Insights

Stay connected your way — Bluetooth, Wi-Fi, or Ethernet.
With added Ethernet support, VENUS D keeps your system stable and your data perfectly safe, even when Wi-Fi fluctuates.

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Extremely Wide Temperature Tolerance

Rated from -20°C to 60°C, performance remains reliable from freezing cold to scorching heat, ensuring safety and efficiency in all conditions.

Built Tough with IP65 Rated Protection

Fully protected against dust and water, the IP65 rating ensures reliable performance in all weather conditions, keeping your system safe and efficient year-round.

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Create Your Custom Energy System with Open API

Open API enables effortless integration with third-party EMS, offering real-time data exchange and customizable strategies for a flexible, scalable smart energy eco system.

Frequently asked questions

What is the return policy?

Our goal is for every customer to be totally satisfied with their purchase. If this isn’t the case, let us know and we’ll do our best to work with you to make it right.

Are any purchases final sale?

We are unable to accept returns on certain items. These will be carefully marked before purchase.

When will I get my order?

We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.

Where are your products manufactured?

Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.

How much does shipping cost?

Shipping is calculated based on your location and the items in your order. You will always know the shipping price before you purchase.