Marstek VENUS D ESS | Inverter + Battery | Full Set
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
2.2kW bidirectional AC flow lets you charge when rates are low, and power your home when they rise.
Ultimate Power Flow with
4 MPPTs intelligently track multiple PV strings—maximizing output from every roof, every angle, every hour, with up to 99.8% efficiency.
Stay powered during outages. 2.2kW for essentials, 2.5kW peak when you need it most.
<15ms EPS Switch
Provides reliable backup for essential appliances, with peak output up to 1440 W for short bursts.
Superior Compatibility, Seamless
Plug in, power on—live in minutes, zero hassle.
Stack design from 2.56kWh to 15.36kWh, tailored to your needs.
Your Whole Home,
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.
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
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
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 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
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.
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
Fully protected against dust and water, the IP65 rating ensures reliable performance in all weather conditions, keeping your system safe and efficient year-round.
Create Your Custom Energy System with
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.