BMS High Voltage Battery Management System 96S307.2V HV BMS 125A For Stationary ESS UPS High Voltage Lithium Batteries

Developed by Hunan GCE Technology, this 3U rack-mount RBMS is a distributed high-voltage battery master controller tailored for lithium energy storage projects. Supporting standalone two-tier and multi-rack three-tier control architectures, it handles max 125A continuous current with dual voltage grades (350VDC / 600VDC). Built-in 3.5-inch embedded touch display delivers real-time system diagnostics, while multi-channel CAN/RS485/Ethernet ports enable plug-and-play linkage with mainstream inverters, UPS, and central stack SBMS. CE & RoHS certified, modular, expandable up to 15 parallel racks, ideal for residential, commercial & utility-scale solar storage deployments.

Hunan GCE Technology (Group Control Energy, GCE) is a China-based professional high-voltage lithium BMS manufacturer with over a decade of R&D and mass production experience. We focus on rack-level cluster battery management solutions compatible with LiFePO4, NMC, and LTO lithium chemistries, covering a DC operating voltage range from 96V to 864V. Our factory owns complete hardware & firmware development lines, offering flexible OEM & ODM customization for global energy storage integrators, solar installers, and UPS manufacturers. All products pass strict pre-delivery aging tests and comply with IEC & national GB safety standards.

• Dual System Architecture Design: Two operating modes for flexible deployment: standalone single rack (2-layer: BMU+RBMS) or multi-rack parallel system (3-layer: BMU+RBMS+SBMS). Max support 15 racks in synchronous parallel with a built-in automatic circulation balance algorithm to eliminate cross-current risks. Up to 160 cells in series, monitoring for high-voltage battery clusters.
• All-Round Safety Protection Mechanism: Integrated pre-charge circuit, 20kA/20ms short-circuit cut-off, overvoltage/undervoltage/overtemperature lockout, secondary fault interlock. 2800VDC insulation withstand capability; optional insulation resistance detection for systems over 300V. IP20 cabinet protection for indoor 19-inch standard rack installation.
• Rich Multi-Channel Communication Compatibility: Equipped with isolated CAN, dual RS485, and RJ45 Ethernet interfaces. Native GCE communication protocol, customizable to match third-party PCS, inverter, and UPS brands. Two dry-contact signal outputs for charge/discharge prohibition alarms; stores up to 5,000 system fault logs, expandable with an external SD card for long-term cell data recording.
• Intuitive Local & Remote Monitoring: Factory-fitted 3.5-inch embedded HMI screen displays real-time voltage, current, temperature, and fault codes. Multi-color LED indicator panel shows charging/discharging/pre-charge/alarm/self-test status. PC upper monitoring software is accessible via Ethernet for remote parameter calibration and IAP firmware online upgrade.
• Wide Environmental Adaptability & Compact Structure: 3U standard rack size (482×132×500mm, net weight ~16kg), front-in & front-out wiring design for easy cabinet maintenance. Operating temperature: -20℃ ~ 55℃, auto current derating above 55℃ to extend service life; 5%-75%RH humidity working range without condensation. Ultra-low standby power consumption ≤15W.

This 3U RBMS serves all mainstream lithium energy storage and backup power projects globally:

• Renewable Solar Storage: Grid-tied PV power stations, off-grid island solar systems, wind-solar hybrid microgrids
• Commercial & Residential ESS: Behind-the-meter self-consumption storage, household wall-mounted battery cabinets, small industrial energy storage
• Backup Power Supply: Industrial-grade UPS for data rooms, telecom base stations, hospital & factory critical load power backup
• DC Power Infrastructure: 220VDC power supply systems for power grid substation equipment
• Utility Energy Regulation: Large-scale energy storage clusters for grid peak shaving & frequency modulation

Take model RBMS-D23-125A-600 as an example:

• RBMS: Rack Battery Management System (cluster master BMS)
• S/D: S=single standalone rack; D=multi-rack parallel support
• 2: Two-wire internal wiring system
• 3: Equipped with a 3.5-inch embedded HMI screen
• 125A: Maximum allowable system rated current
• 600: 600V voltage grade (260-600VDC working window)

• The product contains high-voltage circuits inside; disassembly without factory authorization will void the warranty and pose other hazards. Only certified GCE technicians are allowed to perform internal maintenance.
• After the secondary protection circuit breaker trips, cut off total DC power and wait a minimum of 60 seconds before restarting to avoid damage to internal shunt coils.
• When cold-starting UPS/PCS via battery power, close the DC switch on the inverter side first before activating RBMS to prevent contactor burnout caused by instantaneous capacitor charging surge current.
• All installation tools must have fully insulated handles; cut off the RBMS main breaker completely before any wiring maintenance.
• System charge/discharge protection parameters are preset per project demand; unauthorized parameter modification may trigger battery thermal runaway risks and shorten pack lifespan severely.
• In case of fire near the energy storage cabinet, only dry powder fire extinguishers or fire sand are permitted; liquid fire-fighting agents will cause other potential hazards.
• Disconnect the main circuit breaker if the whole storage system stays idle for long periods to avoid static power consumption draining battery capacity.
• Avoid long-term deployment in environments with severe vibration, direct sunlight, heavy dust, corrosive gas or flammable materials.

• Standard packing: Carton with shockproof foam inner padding
• Included accessories: MPC120 red/blue power quick-plug terminals, 250V 10A AC wiring socket, 120Ω communication terminal resistors, 6Pin dry-contact wiring terminal, power terminal contact fittings

As a trusted high-voltage BMS supplier for global energy storage integrators, GCE persists in strict full-process quality control covering raw material incoming inspection, assembly line aging testing, and full-function pre-shipment verification. Our professional technical team provides one-stop after-sales support, including wiring guidance, system debugging, and remote fault diagnosis, delivering stable, safe, and cost-effective rack BMS solutions for the rapidly expanding global renewable energy storage market.