Marstek Venus E 3.0
5.12 kWh Plug & Play solar battery
Saves you up to €7,000 on electricity bills over its lifetime
Reduce your CO₂ emissions
Feed energy back into your grid whenever you like, either automatically or at times of your choosing, day or night.
Up to 2,500W of backup power in the event of a power cut!
€1499
What is the Venus E 3.0?
Requirements for installing Venus E 3.0 at home
- Have a digital meter
- Contact your supplier to have the meter’s P1 port enabled
- Have a P1 meter (e.g. Homewizard P1)
- Wi-Fi coverage at the location of the meter and the battery
- An electrical supply with at least 2500 W available
- Register the battery with your network operator
You can order the necessary accessories directly from our shop!
Do you meet these criteria?
The Venus E can be set up in 30 minutes!
Full specifications
Battery
Usable capacity: 5.12 kWh (90% depth of discharge)
Technology: LiFePO4 (lithium iron phosphate)
Nominal voltage: 51.2 V (16 cells in series)
Cycle life: >6,000 cycles at 25°C
Estimated service life: ~15–20 years
Dimensions & Weight
Dimensions: 480 × 153 × 624 mm (W × H × D)
Weight: 58 kg (±0.5 kg)
Format: Compact wall-mounted
Rated power
On-grid (connected mode): 2.5 kVA
Backup/Off-grid (stand-alone mode): 2.5 kVA
Peak power (10 s): 3.5 kVA
Warranty & Compliance
Warranty: 10 years
Certification: CE, IEC 62040, IEC 62477
Connection standards: NF EN 50549-1, VDE 4105/0124, G98, and others
Grid-connected
Rated voltage: 230V single-phase
Accepted voltage range: 187V ~ 253V
Frequency: 50Hz
Rated current: 10.9A
Power factor: >0.99 (adjustable from 0.8 leading to 0.8 lagging)
Total harmonic distortion (THDi): <3%
Phase: L/N/PE (single-phase)
Backup/Off-grid
Output voltage: 230V
Output current: 10.9A
Frequency: 50Hz
Harmonic distortion (THDu, linear load): <3%
UPS switchover time: 20 ms (automatic in the event of a mains power failure)
Yield
Maximum efficiency (battery to AC): >93.5%
Overall efficiency: Optimised for self-consumption
Protection
Protection level: DC II / AC III
Overload: Integrated BMS protection
Short circuit: DC and AC protection
Temperature: -20°C to +55°C
AC Connection Interfaces
On-grid: 16A European 3-pin socket
Backup: European 3-pin socket
Display: LED
Communication Protocols
Wi-Fi: Built-in (802.11 standard)
Bluetooth: Built-in
Ethernet (LAN): Yes
RS485: Yes (for Modbus)
System Compatibility
Protocols: Open API / Modbus
EMS integration: Compatible with external systems
Mobile app: Marstek (Play Store – App Store)
Energy monitoring: Real-time monitoring available
Smart Metering
Compatible with: MARSTEK CT002 / CT003 / HW P1 meter
Anti-feed-in: Yes (100% self-consumption guaranteed)
AI optimisation: Maximises savings