{"id":9928,"date":"2026-09-22T09:44:07","date_gmt":"2026-09-22T09:44:07","guid":{"rendered":"https:\/\/www.lvfuenergy.com\/?post_type=product&p=9928"},"modified":"2026-09-22T09:54:13","modified_gmt":"2026-09-22T09:54:13","slug":"lf-ess-261-125kw-261kwh-ci-energy-storage-system","status":"publish","type":"product","link":"https:\/\/www.lvfuenergy.com\/es\/producto\/lf-ess-261-125kw-261kwh-ci-energy-storage-system\/","title":{"rendered":"LF-ESS-261 | 125kW\/261kWh C&I Energy Storage System"},"content":{"rendered":"

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LF-ESS-261 125kW \/ 261kWh Commercial and Industrial Energy Storage System<\/h2>\n

The LF-ESS-261 is a commercial and industrial battery energy storage system with 261 kWh of nominal battery capacity and a 125 kW power conversion system (PCS). The system is designed for peak shaving, time-of-use energy management, solar self-consumption, backup power and microgrid applications.<\/p>\n

The standard configuration combines a 261 kWh liquid-cooled battery cabinet with a separate electrical cabinet. The battery cabinet contains five 52.2 kWh battery packs, a high-voltage box, liquid-cooling equipment and fire-protection components. The electrical cabinet integrates the PCS, EMS, two MPPT functions, STS and main-circuit protection.<\/p>\n<\/section>\n

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Key Specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Product model<\/th>\nLF-ESS-261<\/td>\n<\/tr>\n
Product category<\/th>\nCommercial and industrial battery energy storage system<\/td>\n<\/tr>\n
Nominal battery energy<\/th>\n261 kWh<\/td>\n<\/tr>\n
PCS rated power<\/th>\n125 kW<\/td>\n<\/tr>\n
Cell chemistry and rating<\/th>\nLFP, 3.2 V \/ 314 Ah per cell<\/td>\n<\/tr>\n
Battery pack configuration<\/th>\n52 cells in series (52S), 52.2 kWh per pack<\/td>\n<\/tr>\n
Battery system configuration<\/th>\nFive 52.2 kWh packs, 261 kWh total nominal energy<\/td>\n<\/tr>\n
Battery voltage range<\/th>\n702-936 V DC<\/td>\n<\/tr>\n
Charge\/discharge rate<\/th>\n0.5C<\/td>\n<\/tr>\n
Cooling method<\/th>\nLiquid cooling<\/td>\n<\/tr>\n
Battery cabinet dimensions<\/th>\n1000 x 1386 x 2230 mm (W x D x H)<\/td>\n<\/tr>\n
Battery cabinet weight<\/th>\n2376 +\/- 50 kg<\/td>\n<\/tr>\n
Ingress protection<\/th>\nBattery compartment IP55; liquid-cooling chamber IPX4<\/td>\n<\/tr>\n
Charging temperature<\/th>\n1 to 56 degrees C<\/td>\n<\/tr>\n
Discharging temperature<\/th>\n-28 to 56 degrees C<\/td>\n<\/tr>\n
Allowable relative humidity<\/th>\nBelow 95%, non-condensing<\/td>\n<\/tr>\n
Maximum installation altitude<\/th>\nUp to 4000 m<\/td>\n<\/tr>\n
Communication interfaces<\/th>\nRS485 and Ethernet<\/td>\n<\/tr>\n
Communication protocols<\/th>\nIEC 61850, Modbus RTU and Modbus TCP<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Published ratings apply to the LF-ESS-F261kWh-0.5C battery cabinet. Final project performance depends on the selected electrical-cabinet configuration, usable state-of-charge window, site conditions and system design.<\/small><\/p>\n<\/section>\n

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Battery Cabinet and Electrical Cabinet Architecture<\/h2>\n

The LF-ESS-261 uses separate battery and electrical cabinets. This architecture keeps battery storage and thermal management in the battery cabinet while placing power conversion, energy management, solar control and transfer switching in the electrical cabinet.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Subsystem<\/th>\nPublished configuration<\/th>\nFunction<\/th>\n<\/tr>\n<\/thead>\n
Battery cabinet<\/td>\nFive 52.2 kWh LFP packs, high-voltage box, liquid-cooling unit and fire-protection equipment<\/td>\nStores 261 kWh of nominal DC energy and manages battery safety and temperature<\/td>\n<\/tr>\n
PCS<\/td>\n125 kW bidirectional power-conversion system<\/td>\nConverts battery DC power to AC power and AC power to DC for charging<\/td>\n<\/tr>\n
EMS<\/td>\nEnergy management system<\/td>\nCoordinates operating schedules, power flow and system monitoring<\/td>\n<\/tr>\n
MPPT<\/td>\nTwo MPPT functions in the published electrical-cabinet model definition<\/td>\nControls DC-coupled photovoltaic input<\/td>\n<\/tr>\n
STS<\/td>\nStatic transfer switch<\/td>\nTransfers supported loads between grid-connected and backup operating states<\/td>\n<\/tr>\n
Main-circuit protection<\/td>\nMain circuit switch box and control power box<\/td>\nProvides electrical isolation, distribution and protection<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n
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System Diagrams and Installation References<\/h2>\n

The diagrams below show the battery cabinet, electrical cabinet, system topology and representative application scenarios. Project wiring and component selection must follow the current LF-ESS-261 manual and the approved project design.<\/p>\n

\"LF-ESS-261
\n\"LF-ESS-261
\n\"LF-ESS-261
\n\"LF-ESS-261
\n\"LF-ESS-261
\n\"LF-ESS-261<\/p>\n<\/section>\n

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Why the LF-ESS-261 Uses a 125 kW PCS<\/h2>\n

A 261 kWh battery paired with a 125 kW PCS has a nominal energy-to-power ratio of approximately 2.09 hours. This is calculated as 261 kWh divided by 125 kW. The published 0.5C battery rating corresponds to approximately 130.5 kW at nominal capacity, so the 125 kW PCS rating is within the battery cabinet’s published 0.5C power range.<\/p>\n

This calculation is a nominal design reference. Actual discharge duration depends on the usable state-of-charge window, conversion losses, auxiliary consumption, temperature, battery limits and the connected load profile.<\/p>\n<\/section>\n

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Battery Technology and Thermal Management<\/h2>\n

The battery cabinet uses LFP cells rated at 3.2 V and 314 Ah. Each 52.2 kWh pack contains 52 cells in series, and five packs form the 261 kWh battery system. Cell and aluminum-bar temperature detection is included in the published battery-cabinet specification.<\/p>\n

The liquid-cooling circuit uses a liquid-cooling unit, cold plates and connecting pipelines. LVFU’s published LF-ESS-261 thermal-management information specifies a rated coolant flow of 30 L\/min, a maximum flow of 50 L\/min and a 50% ethylene-glycol aqueous coolant. Refrigeration, heating, self-circulation and automatic operating modes are described for the liquid-cooling unit.<\/p>\n<\/section>\n

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Safety and Fire-Protection Configuration<\/h2>\n