Marstek Venus E Gen 2.0 AC coupled energy storage system
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14-day money-back guarantee
14-day money-back guarantee
We guarantee a 14-day return policy. This means that, regardless of the reason, you can cancel your order within 14 days. As soon as we receive your return in its undamaged original packaging, we will process your refund immediately.
Please note that any costs incurred during a return or refund – such as PayPal's 2% transaction fee and return shipping costs – will be retained as a fee. This fee covers payment and processing costs.
*For more information on the conditions for a successful refund process, please see our refund policy .
10-year warranty
10-year warranty
Marstek.de offers a 10-year warranty. Should the product fail within this period due to material or manufacturing defects, we will provide a replacement. The replacement product will be covered for the remaining warranty period of the original item.
To make a warranty claim, please contact our customer service at: support@marstekenergy.com .
*Further details can be found in our warranty conditions.
Online customer service
Online customer service
We're happy to help! If you have any questions or suggestions, please write to us at support@marstek.de – our team will take care of your request immediately.
| Generally | |
|---|---|
| Dimensions | 560 × 690 × 201 mm |
| Weight | 60 ± 0.5 kg |
| Operating temperature | -20 to +55 °C (Storage: -30 to +85 °C) |
| Protection class | IP65 |
| Overvoltage/voltage resistance | DC II / AC III |
| Insulation type | Isolated |
| Cooling strategy | Natural convection |
| Max. operating altitude | 2000 m |
| Relative humidity | 0–95% |
| On-Grid connection standard | VDE 4105/0124, TOR R25, NF EN50549-1, UNE217001/217002, CEI 0-21, G98, AS4777.2 etc. |
| Regulation / EMC | IEC62040, IEC62477, IEC/EN 61000, EN 300 328, EN 50665, CB 62619 |
| Battery information | |
| capacity | 5120 Wh |
| Battery type | LiFePO₄ |
| Life cycles | > 6000 cycles (25 °C) |
| Nominal voltage | 51.2 V (16S) |
| Maximum battery AC efficiency | > 93.5% |
| AC input/output (mains connected) | |
| Rated input power | 2.5 kW |
| Rated output power | 2.5 kW / 800 W |
| Phased operation | L / N / PE |
| Nominal mains voltage | 230 V |
| Mains voltage range | 187 V to 253 V |
| Rated frequency | 50 Hz |
| Rated output current | 10.9 A |
| Performance factor | > 0.99 (standard), adjustable from 0.8 leading to 0.8 lagging |
| THDi | < 3% |
| Backup (island operation) | |
| Nominal output power | 2.5 kW |
| Maximum apparent output power | 3.5 kVA, 10 A |
| Nominal mains voltage | 230 V |
| Rated output current | 10.9 A |
| Rated frequency output | 50 Hz |
| THDu (Linear) | < 3% |
| Further data | |
| AC mains connection | Three-wire household plug (Euro 16A) |
| Backup connection | Three-hole socket (blue Euro socket) |
| Advertisement | LED |
| Communication interface | WLAN & RS485 (waterproof aviation connector) |
Listen to what they say
FAQ
How does the Venus C/E work?
When the power grid is available, the Venus Energycube can save electricity costs by storing electricity when prices are low and discharging it when prices are high, or by charging via the solar panels during the day and discharging at night. If the power grid fails, the Venus Energycube can still be charged via the solar panels and serve as a backup power source to power critical appliances.
How can I control the input/output of the Venus C/E?
First, the Venus Energycube should be added to the Marsrtek app. Then you can manually adjust the charging and discharging times and power. Alternatively, you can select adaptive mode if it's paired with a smart meter.
Which smart meters are compatible with the Venus C/E?
Currently, Jupiter supports Marstek Smart Meter CT002 and Shelly pro 3em. If you use a P1 meter, Marstek CT003 can be used with it for smart power distribution.
Which charging methods does the Venus C/E support?
On the one hand, the Venus Energycube can be charged via the mains using an AC cable with a maximum charging power of 2500 W.
Alternatively, the Venus Energycube can also be charged by the PV system by connecting it to the same phase as the PV system. The maximum charging power in this case is also 2500 W.
Can the capacity of the Venus C/E be expanded?
The capacity of the Venus C is 2560 Wh, and the capacity of the Venus E is 5120 Wh. The battery capacity cannot be expanded. However, you can install multiple Venus Energycubes on the same phase to increase the backup capacity on that phase accordingly.