125KW 261KWH BESS Energy Storage System | Industrial Outdoor Battery Cabinet

The 125KW 261KWH BESS (Battery Energy Storage System) is a high-capacity industrial-grade energy storage solution engineered for large commercial and industrial facilities with substantial power demands. This all-in-one outdoor cabinet features intelligent EMS management, air duct cooling system, and supports multi-cabinet parallel connection — making it the ideal choice for factories, manufacturing plants, and utility-scale solar + storage hybrid projects requiring reliable, scalable energy management.

Key Advantages:
• Massive Capacity: 261KWH LiFePO4 battery storage (832V 314AH) — powers heavy industrial loads with extended backup time
• High-Power PCS: 125KW PCS with isolation transformer, strong ability to undertake motor/compressor peak loads
• Intelligent EMS: Local application EMS control cabinet automatically controls the operation of various equipment — real-time monitoring via phone and computer
• Premium Solar Array: 196pcs 625W N-type TopCon half-cell mono panels, 23% efficiency — total 122.5KW solar generation capacity
• All-in-One Outdoor Design: Integrated cabinet with air duct cooling fan, A1 fireproof rock wool (50MM thick), aerosol fire suppression, smoke detection, and lighting — built for harsh environments
• Scalable Architecture: Multi-cabinet parallel connection support, expand capacity as your facility grows
• Advanced Safety: 3-level BMS architecture (collection points, BMU, BCU), multiple fire protection equipment, surge protection
• Long Cycle Life: >6000 cycles, comprehensive 10-year battery warranty


System Performance:
Daily Power Generation: 735KWH
Allowable Max Load Power: 125KW
Cabinet Dimensions: 1930×1420×2100mm
Total System Weight: 9052KG
Shipping Volume: 30CBM

Ideal Applications:
Large-scale factory peak shaving and demand charge reduction, manufacturing plant energy cost optimization, industrial park microgrid systems, data center UPS backup, mining operations off-grid power, large commercial building solar + storage integration, EV fast-charging station power supply, utility-scale grid ancillary services.
Why Choose Mars 125KW BESS:

EMS intelligent management — monitor power generation, charging, electricity consumption, and revenue via phone/computer
Multi-cabinet parallel connection — scale from hundreds of KWH to MWH-level storage
Isolation transformer PCS — strong motor/compressor load bearing capability
125KW power output — the most powerful model in the Mars BESS lineup for facilities with 700KWH+ daily consumption
Air duct cooling + industrial-grade air conditioner — installs outdoors in extreme temperatures

Warranty Coverage:
Solar Panels: 25 Years | PCS: 5 Years | Battery Cabinet: 10 Years | Mounting Bracket: 10 Years | Cables & Accessories: 10 Years
We provide free system design based on your site conditions and load analysis. MOQ: 1 set. Delivery within 7-15 working days after payment.

FAQ
Q1: What daily energy consumption is the 125KW 261KWH BESS suitable for?
A: This system is designed for facilities with approximately 700KWH daily power consumption and can handle maximum loads up to 125KW. It is ideal for large factories, industrial parks, manufacturing plants, and commercial complexes with substantial energy demands.

Q2: What is the battery specification and cycle life?
A: The system features a 261KWH LiFePO4 battery with 832V 314AH configuration. It offers over 6000 cycles with comprehensive 10-year battery warranty. The 3-level BMS architecture (collection points, BMU, BCU) ensures cell-level safety and performance optimization.

Q3: What makes the EMS system intelligent?
A: The local application EMS control cabinet automatically controls the operation of various equipment. It supports:

Real-time monitoring via phone and computer
Alarm, monitoring, data reporting (power generation, charging, electricity consumption, revenue)
Multiple alert methods (email and SMS)
3-level networking architecture (C-EMS, H-EMS, S-EMS)
Wired, wireless, or hybrid networking methods

Q4: What is the PCS and why does it have an isolation transformer?
A: The 125KW PCS (Power Conversion System) includes an isolation transformer, providing:

Strong ability to undertake motor/compressor peak loads
Enhanced electrical safety and noise isolation
Grid-compatible output with stable voltage regulation

Q5: What solar panel configuration comes with this system?
A: The standard configuration includes 196pcs of 625W N-type TopCon half-cell mono solar panels with 23% conversion efficiency. Panels are connected as 14 panels in series × 14 parallel strings, delivering a total solar generation capacity of 122.5KW and daily power output of approximately 735KWH.

Q6: What cooling and fire protection systems are included?
A: The cabinet features:

Air duct design + cooling fan for efficient thermal management
Industrial-grade refrigeration air conditioner for extreme temperature environments
A1 fireproof rock wool (50MM thick) for cabinet insulation
Aerosol automatic fire suppression system
Smoke detectors with real-tim

Product Specifications:
Rated Power: 125KW
Battery Capacity: 261KWH
Battery Voltage: 832V
Battery Capacity: 314AH
Battery Type: Lithium Iron Phosphate (LiFePO4)
Cycle Life: >6000 cycles
PCS Capacity: 125KW
PCS Type: With Isolation Transformer
MPPT Capacity: 125KW
EMS: Local Application Control Cabinet (Automatic Equipment Control)
Cooling System: Air Duct Design + Cooling Fan
Fire Protection: Aerosol Fire Suppression
Cabinet Insulation: A1 Fireproof Rock Wool, 50MM Thick
Solar Panel Type: N-type TopCon Half-Cell Mono
Solar Panel Power: 625W × 196pcs = 122.5KW
Panel Efficiency: 23%
Panel Connection: 14pcs in series, 14 strings parallel
Panel Voltage: 41.97V
Daily Power Output: 735KWH
Max Load Power: 125KW
Cabinet Dimensions: 1930×1420×2100mm (L×W×H)
Cabinet Type: All-in-One Outdoor Integrated Cabinet
Safety Features: Smoke Detector, Lighting, BMS, Firefighting Equipment
Expansion Support: Multi-Cabinet Parallel Connection
PV Combiner Box: 8T- Wide Range DC Input × 2PCS, Lightning Protection
AC Distribution: Circuit Breakers, Disconnectors, Surge Protection, MAX 160A/phase
Total System Weight: 9052KG
Total Volume: 30CBM
Installation: Rooftop / Ground Mount
Certifications: CE, ROHS, TUV
Warranty - Panels: 25 Years
Warranty - PCS: 5 Years
Warranty - Battery: 10 Years
Warranty - Bracket: 10 Years
MOQ: 1 Set
Delivery Time: 15-45 Working Days