Marstek VENUS A ESS | Inverter + Battery | Full Set
- All-in-One Design: Integrated battery inverter
- 4 MPPT Solar Input: Up to 2.4kW
- 1200W Backup: Peak at 1440W
- Expandable Storage: Start with 2.08kWh, scale up to 12.48kWh
- MARSTEK Intelligence (AI): Smart Energy Management for maximum efficiency
- Play & Play: Quick setup in just 5 minutes
- Durable LFP Batteries: 6000+ cycles, 15-years design life, 10-years warranty
- IP65 & Wide Temperature Range: Dustproof, water-resistant, stable from -20 °C to 60 °C
Regular price
From HK$8,000.00
Regular price
Sale price
From HK$8,000.00
(-0%)
Unit price
per
HK$8,000.00
Rated Voltage
Battery Energy
Life Cycle
Battery Type
Depth of Discharge
41.6 V (13 S)
2.12 kWh
> 6000 (25 °C)
LiFePO4
90 %
Maximum Input Power
MPPT Operating Voltage Range
Maximum Input Current (Single Channel)
MPPT Track Number
MPPT Efficiency
2.4 kW
16 V ~ 60 V
20 A
4
99.80 %
Rated Output Power
Peak Output Power
Rated Output Voltage
THDu (Linear Load)
1.2 kVA
L / N / PE
230 V, 50 Hz
< 3 %
Rated Output Power
Working Phase
Rated Grid Voltage
Rated Grid Output Current
THDi
1.2 kVA
L / N / PE
230 V, 50 Hz
5.22 A / 3.48 A & 5.22 A
< 3 %
Ambient Temperature
Relative Humidity
IP Level
Cooling Method
Maximum Altitude
Photovoltaic Connection
Off-grid Port
Display
Communication
Dimensions
Weight
- 20 °C ~ 60 °C
0 ~ 95 %
IP65
Natural Cooling
2000 m
MC4
UK Socket
LED
Bluetooth, Wi-Fi, EtherNet
400 × 340 × 220 mm
26 kg
Allows both charging from the grid and feeding power back, supporting flexible home energy management.
Provides reliable backup for essential appliances, with peak output up to 1440 W for short bursts.
Ensures uninterrupted power by switching to backup in under 15 ms, keeping essential devices running.
Superior Compatibility, Seamless 5-Minutes Plug-and-Play
Modular Battery System up to 12.72kWh
Start with 2.12 kWh and easily expand up to 12.72 kWh as your energy needs grow.
Flexible backup solutions for single-phase (3.6 kW / 38.16 kWh) and three-phase (10.8 kW / 114.48 kWh) setups.
Ensure uninterrupted power with Smart Box.
AC-coupled design ensures effortless integration with existing solar installations.
AI Mode Powered by
With MARSTEK Intelligence at its core, AI Mode optimizes the flow of energy in your home.
It automatically schedules charging to maximize self-consumption, reduce electricity costs, and ensure your home always has reliable power.
Smart Control with
Offers live monitoring and flexible mode selection,
keeping your home energy system fully under your control.
Apple - App Store
Google Play
Bluetooth, Wi-Fi & Ethernet Support
Ensure stable and complete data transmission, keeping your system monitored and controlled reliably.
Supreme Anti Feed-In Efficiency with
Automatically monitors and controls energy flow, preventing unwanted energy feedback while maintaining accurate metering.
Solid Reliability , Built to Last
With automotive-grade LFP cells, the VENUS A offers 6000+ cycles with 80% capacity retention over 15+ years.
Backed by a 10-year warranty and ongoing support, it delivers long-lasting, safe, and efficient performance.
Built Tough with
Fully protected against dust and water, ensuring reliable operation in any environment.
Wide Temperature Range from
Designed to perform reliably in extreme temperatures, ensuring stable operation year-round.
Certifications & Standards
What press say...
-
This device focuses on what you really need in everyday life – a large storage capacity at a low price. An inverter is already integrated. All you need are the solar panels.
Peter Hryciuk
Customer
-
The device can even operate without an app. It features a touchscreen display that allows you to define the feed-in power according to schedules.
Kai Schmerer
Reporter
-
Thanks to four MPPT inputs, this enables the use of up to 4 kW of solar energy.
Marcus Schwarten
Senior Tech Writer
-
Marstek promises annual electricity cost savings of up to €1,797 through AI-supported time-use management and anti-feed-in technology.
Thommy
Autor
-
It fits existing balcony solar installations and can be charged extremely quickly using grid energy – practical in combination with dynamic electricity tariffs.
Julia Struck
Senior Editor
FAQ
Q1: What type of battery do MARSTEK products use?
A: Marstek products utilize high-quality Lithium Iron Phosphate (LiFePO₄) batteries. These batteries support over 6,000 charge-discharge cycles, with a design lifespan exceeding 10 years while retaining over 80% of their original capacity, ensuring long-term reliability.
Q2: Are Lithium Iron Phosphate batteries safe?
A: Yes, they are highly safe. Marstek employs self-developed Grade A LiFePO₄ cells with a thermal runaway threshold above 270°C, fundamentally enhancing safety. All batteries undergo rigorous tests, including nail penetration and compression, to prevent combustion or explosion during use.
Q3: Does MARSTEK offer warranty and after-sales services?
A: Absolutely. Marstek provides comprehensive support, including a 5-year worry-free after-sales service and an extended 10-year manufacturer warranty, ensuring peace of mind throughout the product lifecycle.
Q4: How do I register a MARSTEK product?
A: To streamline service, we recommend registering your product via the official Marstek mobile app after purchase for seamless activation and support.
Q5: How is shipping calculated?
A: For orders within Hong Kong totaling HKD 100 or more, shipping is free. Currently, we do not offer international shipping.
Q6: What is the return and exchange policy?
A: We stand by our product quality. If you identify any non-human-caused quality issues within 7 days of delivery, contact us immediately.
Our team will verify the situation and arrange for a replacement, return, or refund as needed.