

Marstek Venus D Expansion Battery MST-E2.5ST-D 2.56kWh LiFePO4
The Marstek MST-E2.5ST-D expansion battery adds 2.56kWh of LiFePO4 to the Marstek Venus D all-in-one system. It connects to the main unit and makes more energy available in the evening and, on systems with an emergency output, during blackouts.
Up to 5 can be connected per system, for 15.36kWh in total. 51.2V LiFePO4 cells (16S) rated for over 6000 cycles at 90% depth of discharge, IP65 enclosure and natural cooling. It works only with the Marstek Venus D.
Key features
Technical specifications
| Feature | Value |
|---|---|
| Product code | MST-E2.5ST-D |
| Battery energy | 2.56kWh LiFePO4 |
| Rated voltage | 51.2V (16S) |
| Cycles and depth of discharge | over 6000 at 25 °C, DoD 90% |
| Compatibility | Marstek Venus D |
| Expansion | up to 5 per system (15.36kWh) |
| Protection rating | IP65 |
| Operating temperature | -20 to +60 °C |
| Dimensions | 480×320×115 mm |
| Weight | 19kg |
Installation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.


















































