MP-125kW/257kWh ST255CS-2H C&I ESS-3548

High-Density, Efficient & Intelligent C&I ESS

The China Moneypro PowerStack ST255CS-2H Series is a fully integrated commercial and industrial battery energy storage system engineered to deliver reliable power, high energy throughput, and strong safety performance for mid-to-large C&I applications. Featuring advanced liquid cooling and modular design, it supports peak shaving, energy arbitrage, backup power and grid-interactive operation for diverse PV + ESS deployments.

Intelligent Energy Harvest & Performance

Maximize System Efficiency

• High conversion efficiency: PCS (power conversion system) efficiencies exceed 98.5 % for minimal energy loss.

• AI-driven thermal balance liquid cooling: Intelligent liquid cooling stabilizes cell temperatures (≤ 2.5 °C difference) and reduces auxiliary losses by up to ~33 %, increasing usable energy throughput.

• Round-trip efficiency ≥ 90 % under typical operating conditions for enhanced energy utilization.

Benefits:

• Efficient charge/discharge performance.

• High system yield and reduced operational thermal penalties.

Robust, Safe & Reliable Architecture

Comprehensive Protection & Stability

• Advanced safety design: AI-enabled cell health monitoring predicts and mitigates thermal and electrical abnormalities.

• Three-level over-current and fire defense: Protection at PACK, RACK and PCS level plus multi-tier fire safety design.

• IP55 rated enclosure with C3/C5 corrosion protection: Durable against dust, moisture and harsh environments.

• Grid-forming & micro-grid support: Adapts to unstable grids, enables black start capabilities and supports autonomous power delivery.

Advantages:

• Higher operational safety from cell to system.

• Greater reliability in challenging C&I power environments.

Scalable & Easy Deployment

Flexible & Fast Commissioning

• Modular liquid-cooled cabinets: Designed for side-by-side, back-to-back or face-to-face configurations to match site constraints.

• Pre-installation & factory-precommissioned: Reduces on-site setup time and simplifies early project integration.

• Parallel expansion: Enables system scaling by connecting up to 25 units in grid-tied operation or numerous units for off-grid scenarios.

• iSolarCloud integration: Remote O&M, real-time monitoring and centralized system management.

Benefits:

• Rapid site deployment and commissioning.

• Scalable capacity growth as energy demand evolves.

Why Choose China Moneypro PowerStack ST255CS-2H?

• High-Efficiency Storage: PCS > 98.5 % and system round-trip ≥ 90 %.

• Intelligent Thermal Management: Liquid cooling with AI optimization for lower heat losses.

• Advanced Safety Layer: Predictive cell protection, three-level current/fire defense.

• Scalable Architecture: Modular configuration with easy parallel expansion.

• Cloud-Ready Monitoring: iSolarCloud enables remote monitoring, alarms & analytics.

Key Specifications

• Battery Capacity: ~257 kWh (LFP 3.2 V / 314 Ah, 256S1P)

• Rated Output Power: ~125 kW

• Nominal Voltage Range: ~691.2 V – ~934.4 V

• Max Efficiency: ≥ 90 %

• Rated Grid Voltage: 380 V (323 V – 418 V)

• Protection Rating: IP55 (with C3/C5 corrosion protection)

• Operating Temp: –30 °C – 50 °C

• Humidity Range: 0 % – 100 %

• Max Altitude: 3000 m

• Cooling: Intelligent liquid cooling

• Communication: Ethernet, Modbus TCP

Typical Applications

• Peak Shaving & Energy Arbitrage: Reduce peak charges and optimize energy buy/sell margins.

• Commercial Rooftops: Reliable energy storage paired with PV for business sites.

• Industrial Load Management: Smooth load demand and backup power for industrial processes.

• Micro-Grid & Resilience: Supports grid-forming and off-grid operation for enhanced uptime.

FAQ – Common Questions

Q1: What is the nominal capacity and power of this system?
The China Moneypro PowerStack ST255CS-2H provides ~257 kWh battery energy and 125 kW output — suitable for medium-to-large C&I ESS projects.

Q2: What cooling technology is used?
It uses intelligent liquid cooling with thermal balancing to maintain cell temperature uniformity and reduce auxiliary losses.

Q3: Can the system be scaled for larger energy needs?
Yes — modular cabinets can be installed in parallel (e.g., up to 25 units on-grid) for higher storage and power capacity.

Q4: Is it suitable for outdoor installations?
Yes — with IP55 protection and optional C5 corrosion resistance, it’s designed for outdoor C&I environments.

Q5: How can the system be monitored and maintained?
The system integrates with iSolarCloud for real-time performance monitoring, remote fault alerts and operational analytics.