Description
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The TOPBAND ecosolex M125G261A is a fully integrated liquid-cooled commercial and industrial energy storage system designed for grid-connected energy storage applications.
The cabinet combines a 261.248 kWh lithium iron phosphate battery system with a 125 kW bidirectional power conversion system, BMS, EMS, liquid cooling, fire suppression and system monitoring in a single outdoor cabinet.
With at least 243 kWh of usable energy, integrated energy management and remote monitoring, the system is suitable for peak shaving, load shifting, self-consumption optimisation, time-of-use energy management and commercial energy storage projects.
The complete system integrates the LiFePO₄ battery, PCS, BMS, EMS, fire protection and liquid cooling equipment in one compact cabinet.
Key benefits
261 kWh integrated battery storage
The M125G261A provides:
- 261.248 kWh nominal energy
- At least 243 kWh usable energy
- 314 Ah nominal capacity
- 832 V rated battery voltage
- 728–949 V operating voltage range
The battery cluster consists of five 166.4 V, 314 Ah battery modules connected to form a 261.248 kWh battery system.
Integrated 125 kW bidirectional PCS
The integrated power conversion system supports bidirectional AC/DC energy flow and has a rated AC power of 125 kW.
The PCS supports:
- 125 kW rated AC power
- 125 kW maximum DC power
- 400 V three-phase grid connection
- 180 A rated AC current
- 110% continuous overload capability
- 120% overload capability for one minute
- Charge/discharge switching time below 100 ms
- Maximum conversion efficiency of at least 98.5%
The PCS provides bidirectional energy conversion for charging and discharging the battery according to the selected energy-management strategy.
Lithium iron phosphate battery technology
The system uses lithium iron phosphate battery cells, offering a robust battery chemistry for demanding commercial energy-storage applications.
The complete battery cluster has:
- 260S1P configuration
- 314 Ah rated capacity
- 832 V rated voltage
- Maximum charge/discharge current of 172 A at 25 ±5°C
- Recommended charging current of up to 157 A
Intelligent liquid cooling
The integrated liquid cooling system provides active temperature control for the battery modules.
Liquid cooling helps maintain a more uniform battery temperature, supporting stable operation and reducing thermal differences between battery cells.
The liquid cooling unit provides:
- 5 kW cooling capacity
- 2 kW heating capacity
- 46.5 L/min rated water flow at 60 kPa
- R134a refrigerant
- Water-based coolant containing 50% ethylene glycol
The product documentation describes an intelligent liquid-cooling strategy designed to reduce auxiliary power consumption.
Integrated Energy Management System
The built-in EMS coordinates the battery, PCS, BMS, power meter, cooling system, fire protection system and environmental sensors.
It supports local control as well as connection to a cloud-based energy-management platform for monitoring, operating strategies and data analysis.
Depending on the system configuration, the EMS supports:
- Ethernet
- RS485
- CAN
- Wi-Fi and Bluetooth
- 4G
- Optional 5G
- Digital inputs and outputs
- Local web access
Remote monitoring and management
The TOPBAND cloud platform supports functions such as:
- Remote system monitoring
- Remote parameter configuration
- Revenue calculation
- Remote firmware upgrades
- Data analysis
- Cloud-based warning notifications
A mobile app and local web interface are also available for on-site operation and maintenance.
Multi-level safety system
The cabinet includes multi-level monitoring for:
- Short circuits
- Overcurrent
- Overvoltage
- Overtemperature
- Other abnormal operating conditions
The product brochure describes module-level and cluster-level fire protection as well as additional cabinet safety measures.
The integrated aerosol fire suppression system includes:
- PACK-level thermal activation
- Cluster-level active detection
- Smoke detection
- Temperature detection
- Audible and visual alarm
- Fire suppression feedback to the control system
Compact all-in-one cabinet
The integrated design combines the main energy-storage components in one outdoor cabinet, reducing the number of separately installed devices and interfaces.
The product datasheet lists a footprint of approximately 1.35 m² and cabinet dimensions of approximately:
- Width: 1,000 mm
- Depth: 1,350 mm
- Height: 2,170 mm
The listed system weight is approximately 2,500 kg.
Typical applications
The M125G261A is suitable for:
- Commercial and industrial energy storage
- Peak shaving
- Load shifting
- Time-of-use electricity optimisation
- Increasing PV self-consumption
- Grid-connected battery storage
- Energy cost optimisation
- Commercial microgrids
- EV charging infrastructure
- Factories and production facilities
- Warehouses and logistics centres
- Farms and agricultural businesses
- Hotels, offices and commercial buildings
Three Technical Specifications
| Specification | M125G261A |
|---|---|
| Product type | Liquid-cooled integrated energy storage cabinet |
| Battery chemistry | Lithium iron phosphate, LiFePO₄ |
| Nominal capacity | 314 Ah |
| Nominal energy | 261.248 kWh |
| Usable energy | ≥243 kWh |
| Rated output power | 125 kW |
| Rated battery voltage | 832 V |
| Battery operating voltage | 728–949 V |
| Battery configuration | 260S1P |
| Battery modules | 5 × 166.4 V / 314 Ah |
| Max. battery charge current | 170–172 A, depending on stated system condition |
| Recommended charge current | ≤157 A |
| Rated AC voltage | 400 V |
| Rated AC current | 180 A |
| AC connection | Three-phase, four-wire / 3L+N+PE |
| Grid voltage range | 340–440 V |
| Grid frequency | 50/60 Hz ±2.5 Hz |
| Power factor | –1 to +1 |
| Current THD | ≤3% at full load |
| Charge/discharge switching time | <100 ms |
| PCS maximum efficiency | ≥98.5% |
| System conversion efficiency | Up to 90% |
| Cabinet protection rating | IP54 |
| Cooling | Intelligent liquid cooling |
| Cooling capacity | 5 kW |
| Fire suppression | PACK- and cluster-level aerosol system |
| Operating temperature | –20°C to +55°C |
| Cycle life | ≥8,000 cycles |
| Maximum altitude | 4,000 m, derating above 2,000 m |
| Dimensions | Approx. 1,000 × 1,350 × 2,170 mm |
| Weight | Approx. 2,500 kg |
| Communication | Ethernet, RS485, CAN, Wi-Fi/BLE, 4G; optional 5G |
| EMS | Integrated local and cloud-enabled EMS |
Practical application scenarios










