125kW 261kWh Compact Commercial Liquid Cooled Energy Storage Cabinet
The BSLBATT LC125-261 is a compact 125kW/261kWh all-in-one commercial liquid-cooled battery energy storage cabinet. With a footprint under 2 square meters and low-noise operation, it fits commercial and industrial sites from retail centers to factories. Built with 314Ah LiFePO4 cells and pack-level liquid cooling for over 8,000 cycles, the integrated PCS supports peak shaving, demand management, and renewable energy self-consumption. Up to 8 units can be paralleled for flexible capacity expansion.
Full C&I BESS in One Compact Cabinet
ALL-IN-ONE INTEGRATION. 5 liquid-cooled LiFePO4 battery packs, 125kW PCS, BMS, EMS, and gas fire suppression, pre-assembled and factory-tested. One delivery, one connection, one day to commission.
COMPACT FOOTPRINT. 0.93 x 1.30m, roughly the floor space of a single pallet. Practical for rooftops, basements, parking structures, and tight side yards.
LOW NOISE OPERATION. Liquid cooling eliminates high-speed fan noise. Install next to offices, retail floors, or hotel lobbies without complaints.
LONG SERVICE LIFE. IP55, -20°C to 55°C, 8,000+ cycles, 10-year warranty. RS485, Ethernet, and Modbus RTU/TCP for remote monitoring.
FLEXIBLE EXPANSION. Start at 261kWh, scale to 2MWh. Parallel up to 8 cabinets with coordinated EMS. Each unit retains independent BMS and fire suppression.
Most Customers Start Here with the LC125-261
Peak Shaving and Demand Management
Charge during off-peak hours when electricity rates are lowest, then discharge during peak demand periods to reduce maximum demand charges. For commercial facilities on time-of-use tariffs, the LC125-261 can lower electricity costs by 15 to 30% depending on the local rate structure and load profile.
Demand charges can account for 30 to 50% of a commercial electricity bill. Shaving those peaks pays for the system faster than almost any other energy investment.
Renewable Energy Integration
Pair with rooftop or ground-mounted solar PV to store excess generation during the day and consume it during evening peak hours. The 261kWh capacity covers approximately 2 hours of continuous 125kW discharge, matching the typical late-afternoon to early-evening demand peak for commercial facilities. Every kilowatt-hour stored from your own PV array and used on site is one you do not buy from the grid at peak rate.
EV Charging Infrastructure
Buffer grid power for EV charging stations to avoid costly demand charge spikes when multiple vehicles charge simultaneously. The 125kW continuous output can support two to three 50kW DC fast chargers without requiring a grid connection upgrade.
Add chargers without paying for a transformer upgrade. Your demand charges stay flat even as utilization grows.
Microgrids and Smart Energy Systems
Integrate into site-level microgrids alongside solar, diesel generators, and grid connections. The LC125-261 communicates via Modbus RTU/TCP and Ethernet for real-time dispatch by third-party EMS or microgrid controllers. Up to 8 units can be paralleled for on-grid deployments, scaling from 261kWh to over 2MWh of total storage capacity.
One standardized building block that works with your existing infrastructure today and scales with your energy needs over the next decade.
Runs Quiet. Lasts Longer.
The LC125-261 uses pack-level liquid cooling. Each battery pack contains an aluminum cold plate with thermal adhesive bonded directly to the cell surfaces. A coolant loop circulates through all five packs, keeping cell-to-cell temperature differences within a narrow range from -20 to 55 degrees Celsius ambient. Uniform cell temperatures mean more consistent charge and discharge behavior, which directly extends cycle life to over 8,000 cycles.
Liquid cooling also eliminates the fan noise that makes air-cooled systems difficult to install near people. The LC125-261 can be placed next to office windows, retail entrances, hotel service areas, or residential boundaries without triggering noise complaints or violating local acoustic regulations.
No permitting delays from noise objections, no tenant complaints, and battery packs that hold capacity longer because every cell runs at the same temperature.
Scalable from 261kWh to Over 2MWh
A single LC125-261 cabinet delivers 125kW / 261kWh. When project requirements grow, multiple units can be paralleled to increase total capacity and power output without replacing existing equipment.
In on-grid configurations, the number of parallel units is limited only by the upstream transformer capacity. In off-grid configurations with an external TS Cabinet and STS, up to 8 units can operate in parallel, delivering up to 1MW of power and over 2MWh of storage capacity.
All paralleled units share a common EMS for coordinated charge and discharge scheduling. Each cabinet retains independent BMS and fire suppression, so a fault in one unit does not affect the others.
For projects requiring more than 500kWh from a single cabinet, the LC250-522 delivers 250kW / 522kWh in one unit using a dual-cluster architecture.
Buy what you need today, add cabinets when load grows. No forklift replacement, no re-engineering, no stranded assets.
| Configuration | Units | Power | Capacity |
| Single cabinet | 1 | 125kW | 261kWh |
| Dual parallel | 2 | 250kW | 522kWh |
| Quad parallel | 4 | 500kW | 1,044kWh |
| Full parallel (off-grid max) | 8 | 1,000kW | 2,089kWh |
One Delivery. One Connection. One Day to Commission.
The LC125-261 arrives as a fully assembled, factory-tested cabinet. Battery packs, PCS, BMS, EMS, cooling system, and fire suppression are pre-integrated and pre-wired. On site, the installation team connects AC power and communication cables, and the system is ready for commissioning. No separate component sourcing, no multi-vendor coordination, no weeks of on-site assembly.
Inside the cabinet: five 52.25kWh liquid-cooled LiFePO4 battery packs (314Ah cells, 1P52S configuration), a 125kW bi-directional PCS rated for 1.1x continuous overload, a dedicated liquid cooling unit, an EMS controller with RS485/Ethernet/Modbus RTU/TCP connectivity, and a two-level gas fire suppression system with smoke detection and emergency power-off.
The full system weighs 2,260kg and sits within a 0.93 x 1.30m footprint, roughly the floor space of a standard pallet. For sites with limited crane access, the compact dimensions and single-piece delivery simplify logistics planning. Your system generates revenue from day one instead of waiting weeks for multi-component assembly and commissioning.
Built to Stay Outdoors for 10 Years
The LC125-261 is rated IP55 for outdoor deployment in rain, dust, and salt spray conditions. Battery packs are individually sealed to IP67. The galvanized SGCC steel cabinet with powder-coated finish resists corrosion in coastal, humid, and high-pollution environments. Operating temperature range spans -20 to 55 degrees Celsius with derating above 45 degrees Celsius.
Safety is addressed across six layers:
Cell Safety
314Ah LiFePO4 cells with 80% lower thermal runaway risk and 90% lower overcharge risk compared to NMC chemistry. Cluster-level BMS monitors every cell for voltage, temperature, and state of charge in real time.
Electrical Safety
Pack-level manual service disconnect (MSD) isolates each pack independently during maintenance. Cluster-level fuse and circuit breaker protection, plus AC/DC side protection, prevent fault propagation through the system.
Structural Safety
Galvanized SGCC steel case construction with durable powder-coated finish resists corrosion in coastal, humid, and high-pollution environments. Thickened base provides enhanced stability for outdoor floor-standing installation.
Environmental Safety
Battery packs are individually sealed to IP67. The PCS compartment is rated IP20 internally, while the complete system achieves IP55-C3 classification for outdoor deployment in rain, dust, and salt spray conditions.
Fire Safety
Pack-level and cluster-level dual fire suppression system (2-Level FSS) uses gas extinguishing agents. Directed pressure relief valves vent gases away from personnel areas. Intelligent fire safety monitoring detects early-stage thermal events before they escalate.
Data Safety
Station-level safety analysis aggregates data from BMS, PCS, and EMS to identify anomalies across the full system. Data cloud encryption protects operational data in transit and at rest. IoT access control restricts system configuration to authorized personnel only.
BSLBATT backs the LC125-261 with a 10-year warranty covering battery packs, PCS, and all integrated components. Install it, connect it, and let it run. Six layers of protection and a 10-year factory warranty mean you manage energy costs, not equipment problems.
System-Level Off-Grid and Backup Power Solution
For sites with unstable grid connections or frequent outages, BSLBATT offers a complete system-level off-grid solution by pairing the LC125-261 with an external Transfer Switch (TS) Cabinet and Static Transfer Switch (STS).
This configuration enables seamless grid-to-island switching, ensuring uninterrupted power for critical loads. When the grid fails, the system transitions to off-grid mode using stored battery energy and on-site generation sources. When grid power returns, the system reconnects automatically without manual intervention.
The off-grid system solution supports up to 8 LC125-261 units in parallel with a single TS Cabinet, delivering up to 1MW of off-grid power capacity. Contact the BSLBATT project team for system-level design support and TS Cabinet specifications.
LC125-261 Commercial Energy Storage Cabinet FAQ
Q1: What is the footprint of the LC125-261?
The BSLBATT LC125-261 measures 930mm wide by 1,300mm deep by 2,180mm tall, occupying less than 1.21 square meters of floor space. This makes it one of the most compact all-in-one C&I BESS cabinets available, suitable for rooftops, basements, parking structures, narrow side yards, and other space-constrained commercial sites.
Q2: How does the LC125-261 compare to air-cooled energy storage cabinets?
The BSLBATT LC125-261 uses pack-level liquid cooling instead of forced-air cooling. Liquid cooling provides more uniform cell temperatures across all battery packs, resulting in longer cycle life and more consistent performance. It also operates at significantly lower noise levels, making the LC125-261 suitable for installation near occupied spaces like offices, retail areas, and hotels.
Q3: Can the LC125-261 operate off-grid?
The BSLBATT LC125-261 is a grid-tied energy storage system. For off-grid or backup power applications, BSLBATT offers a system-level solution that pairs the LC125-261 with an external Transfer Switch (TS) Cabinet and Static Transfer Switch (STS). This configuration enables seamless grid-to-island switching. Contact the BSLBATT team for off-grid system design support.
Q4: How many LC125-261 units can be paralleled?
In on-grid configurations, the number of parallel units depends on the upstream transformer capacity. In off-grid system configurations with a TS Cabinet, up to 8 BSLBATT LC125-261 units can operate in parallel, delivering up to 1,000kW of power and over 2,000kWh of storage capacity.
Q5: What warranty does the LC125-261 come with?
BSLBATT provides a 10-year warranty on the LC125-261 system, covering the battery packs, PCS, and integrated components. The LiFePO4 battery packs are rated for over 8,000 cycles at 25 degrees Celsius with 90% depth of discharge.
Q6: What communication protocols does the LC125-261 support?
The BSLBATT LC125-261 supports RS485, Ethernet, and Modbus RTU/TCP for integration with third-party EMS, SCADA, building management systems, and the BSLBATT Cloud monitoring platform.
Get LC125-261 Pricing and Technical Support
The BSLBATT LC125-261 is manufactured at the BSLBATT production facility in Huizhou, China, and available for global distribution. Whether you are an EPC contractor sizing a commercial peak shaving system, a distributor expanding your C&I storage portfolio, or a facility owner evaluating on-site energy storage, the BSLBATT team provides project-level technical support from system design through commissioning. Request a quotation or schedule a technical consultation to discuss your project requirements.
| Modle | LC125-261 |
| Battery Side Parameters | |
| Cell Type | 314Ah / 3.2V LFP |
| Battery Cluster Rated Voltage | DC 832V |
| Battery Side Rated Capacity | 314Ah |
| Series / Parallel Configuration | 1P*52S*5S |
| Battery Side Rated Energy | 261.2kWh |
| Battery Side Operating Voltage Range | DC 728.0V~910.0V |
| Rated Charge / Discharge Current | 157A |
| AC Side Parameters (PCS) | |
| Rated AC Voltage | AC400V, 3W+PE / 3W+N+PE |
| Rated AC Frequency | 50 / 60Hz (±5) |
| Rated / Max. AC Power | 125kW/137kW |
| Rated / Max. AC Current | 180A / 200A |
| Power Factor | -1~+1 |
| Current THDI | <3% |
| Overload Capability | 1.1x (continuous) |
| Isolation Type | Non-isolated |
| Operation Mode | Peak-valley arbitrage,demand management |
| Protection | Over-temperature, low-temp charge protection, over-current, short circuit, over/under voltage, DC bus protection |
| General Parameters | |
| Operating Temperature | ‘-20℃~+55℃ (derating above 45℃) |
| Operating Humidity | 10%~90%RH (non-condensing) |
| Altitude | 3000m |
| Installation Method | Floor standing |
| Cooling Method | Intelligent Air Cooling+Liquid Cooling |
| Fire Protection | Gas fire extinguishing system |
| Communication | RS485, Ethernet, Modbus RTU / TCP |
| Ingress Protection | IP55 |
| Dimensions (W*D*H, mm) | 930*1300*2180 (±5mm) |
| Weight | 2260kg±3% |
| Warranty | 10 years |
