BATTERY ENERGY STORAGE SYSTEMS (BESS)
PowerStack 255CS ST255CS-2H / ST510CS-4H — C&I energy storage, 125 kW / 257–514 kWh
Country: China · Model: PowerStack 255CS ST255CS-2H / ST510CS-4H
The manufacturer cabinet BESS rated 125 kW AC with 257 kWh (2 h) or 514 kWh (4 h) for commercial and industrial sites. Inside are 3.2 V / 314 Ah LFP cells and a built-in PCS with up to 98.5% efficiency. The cabinet runs grid-tied and off-grid, switching between modes automatically.
- Capacity
- 257 kWh (2 h) or 514 kWh (4 h)
- Cells
- LFP 3.2 V / 314 Ah
- AC power
- 125 kW, 400 V, 3P4L
- PCS efficiency
- up to 98.5%
Technical specifications
| Capacity | 257 kWh (2 h) or 514 kWh (4 h) |
|---|---|
| Cells | LFP 3.2 V / 314 Ah |
| AC power | 125 kW, 400 V, 3P4L |
| PCS efficiency | up to 98.5% |
| Modes | grid-tied, off-grid, automatic switchover |
| Protection rating | IP55, C5 |
| Operating temperature | −30 to +50 °C, liquid cooling |
| Dimensions / weight | 1,150 × 2,450 × 1,610 mm, ≤ 2,900 kg (2H); 2,152 × 2,470 × 1,610 mm, ≤ 5,300 kg (4H) |
| Customs codes (for reference) | |
| HS code | 8507.60 |
| UKTZED code (Ukraine) | 8507600000 |
| CN code (EU) | 85076000 |
Specifications are taken from the manufacturer’s technical documentation. Updated . Customs codes are for reference only; the final code is determined at customs declaration for the specific model.
Description
Battery, converter, cooling and fire protection sit in a single cabinet, so no separate container pad is needed. Output is 400 V, 3P4L, meaning three phases plus neutral, and the cabinet connects to the main switchboard of the building. Liquid cooling keeps the cell temperature spread within 2.5 °C, so cells age evenly and capacity fades more slowly. Fire protection works on three levels. The IP55, C5 cabinet stands outdoors and operates at −30 to +50 °C. The 2H version weighs up to 2,900 kg at 1,150 × 2,450 × 1,610 mm, the 4H up to 5,300 kg at 2,152 × 2,470 × 1,610 mm, so plan a concrete base and crane access. Monitoring runs through iSolarCloud.
How to choose
Choose the version by discharge duration. The ST255CS-2H delivers 125 kW for 2 h and suits peak shaving, while the ST510CS-4H holds the same power for 4 h and covers the evening drop in PV output. If 110 kW is enough, the PowerStack 200CS offers 229 or 458 kWh. Smaller loads fit the modular PowerKeeper ST050-250CF at 49.9–249.6 kWh, and megawatt-class grid projects call for the PowerTitan 2.0 ST5015UX container at 5,015 kWh.
Request a price and lead time
PowerStack 255CS ST255CS-2H / ST510CS-4H — C&I energy storage, 125 kW / 257–514 kWh. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the capacity of the PowerStack ST255CS-2H and ST510CS-4H?
257 kWh for a 2 h discharge and 514 kWh for 4 h, with 125 kW in both cases.
Can the PowerStack 255CS run without the grid?
Yes, it has an off-grid mode with automatic switchover from the grid.
How much does the ST510CS-4H weigh?
Up to 5,300 kg at 2,152 × 2,470 × 1,610 mm. Installation needs a crane and a concrete base.
Can the PowerStack 255CS stand outdoors?
Yes, the IP55, C5 cabinet operates at −30 to +50 °C with liquid cooling.
What grid does the ST255CS-2H connect to?
A three-phase 400 V network, 3P4L with neutral.
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REQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.