MARSTEK VENUS E

Plug-in AC Battery ESS

Key Features

800W/2.5kW On-Grid, Plug & Play, Backup 2.5kW
5.12kWh LFP Battery, Cycle Life >6000 (25°C)
Compatible with Any PV System
Anti Feed-in, 100% Self Consumption
Maximum Money Saving with AI Optimization
Supports MARSTEK CT002 / Shelly Smart Meter

Backup Support

Supports Whole-home Single/Three Phase Backup
Single-Phase: up to 3 Units Parallel, 7.5kW/15.36kWh
Three-Phase: Each Phase up to 3 Units Parallel
Total 9 Units Parallel, 22.5kW/46.08kWh

Integration & Connectivity

Supports Integration with External EMS
Open API/Modbus Protocol
LAN/RS485/WIFI/BT

Also includes MARSTEK SmartBox support.

System Diagram Overview

The system diagram illustrates the connection of the MARSTEK VENUS E Battery ESS. It shows the main power 'Grid' feeding into a 'Meter'. From the meter, power is distributed to a 'Main Panel' and a 'MARSTEK CT002' device. The CT002 is highlighted for its 'Anti Feed-in' capability and its role in ensuring '100% Self-consumption Guaranteed'. The MARSTEK VENUS E unit itself is depicted as a central component of this energy management system.

Specifications

Battery Info

Rated Voltage	51.2V (16S)
Capacity	5120Wh
Life Cycle (Times)	>6000 (25°C)
Battery Type	LiFePO4
DoD	90%

AC Input / Output (On Grid)

Rated Input Power	2.5kVA
Rated Output Power	2.5KVA/800VA
Operating Phase	L/N/PE
Rated Grid Voltage	230V
Grid Voltage Range	187V~253V
Rated Grid Frequency	50Hz
Rated Grid Output Current	10.9A
Power Factor	> 0.99 (Default) / 0.8 leading...0.8 lagging (Adjustable)
THDI	< 3%

Back-up (Off Grid)

Rated Output Power	2.5kVA
Max. Apparent Output Power	3.5kVA, 10s
Rated Grid Voltage	230V
Rated Output Current	10.9A
Rated Output Voltage Frequency	50Hz
THDu (Linear Load)	<3%

Efficiency

Battery-AC Side Max. Efficiency

> 93.5%

Protection

Protection Level	DC II / AC III
Overvoltage/Voltage Withstand Level	Isolated

General

Isolation Type	Isolated
Operating Temperature Range	-20°C ~ +55°C (Storage -30°C ~ +85°C)
Relative Humidity	0~95%
Ingress Protection	IP65
Cooling Strategy	Natural Convection
Max. Operating Altitude	2000m
On-grid Connection Standard	NFEN50549-1, VDE4105/0124,G98,CE10-21,PETREE,PN-EN50549-1/-2,TORR25,UNE217001/217002,NTS631, AS47772
Regulatory/EMC	IEC62040, IEC62477, IEC/EN 61000-6-1/-2-/3-/4,IEC/EN 61000-3-2/-3,EN 300 328,ΕΝ 301 489 -1/-17, EN 50665,CB 62619

Dimensions & Weight

Dimension	480153624mm
Weight	60 ± 0.5kg

Additional Data

On-grid AC Connection	Three-wire Household Plug (Euro16A)
Back-up Connection	Three-hole socket (Euro socket)
Display	LED
Supported Communication Interface	LAN / WIFI / Bluetooth / RS485

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