DEYE GB-LM4.0-PRO battery module

Item number: C00604

Warranty: 10 years or until the end of the cycle's service life

The DEYE GB-LM4.0-PRO is a modular battery unit for the GB-L-PRO high-voltage energy storage system. The module is based on LiFePO₄ (lithium iron phosphate) cell technology, which provides excellent safety, long service life, and high energy density. GB-LM4.0-PRO units can be integrated in series with the GB-LBS-PRO control box to form a flexibly expandable, high-efficiency energy storage system.

Main technical characteristics

• Battery technology: LiFePO₄ (LFP)
• Nominal voltage: 102.4 V DC
• Capacity: 40 Ah
• Energy storage capacity: 4 kWh
• Nominal charging/discharging current: 40 A
• Peak discharge current: 50 A
• Operating voltage range in the system: 120–750 V DC (by connecting multiple modules in series)
• Communication: CAN / RS485 (via GB-LBS-PRO control module)
• Charging temperature: –20 °C to +55 °C
• Operating temperature: –20 °C to +55 °C
• Storage temperature: 0 °C – +35 °C
• Protection: IP65 (dustproof and waterproof enclosure)
• Dimensions (W × H × D): 540 × 385 × 220 mm
• Weight: approx. 40.5 kg
• Installation: floor-mounted, compatible with GB-LBase base plate
  
  

Operating conditions and safety

• Wide operating temperature range (–20 °C to +65 °C in the system)
• Built-in overcurrent, overvoltage, and temperature protection
• Robust, IP65 aluminum housing – for indoor and outdoor use
• Fire protection mechanism and explosion relief valve
• Built-in temperature sensing at key points
• Low-maintenance modular design
  
  

Performance and service life

• Recommended depth of discharge (DoD): 90%
• Cycle Life: ≥ 6,000 cycles (at 25°C, 0.5C charge/discharge, EOL ≥ 70%)
• Cycle efficiency: ≥ 95%
• Warranty period: 10 years or until the end of the cycle life – whichever comes first
  
  

Key benefits

• High-voltage series architecture, high system efficiency, and lower cable losses
• Modular expandability – up to 24 kWh total capacity (by connecting 6 modules in series)
• Safe LiFePO₄ technology – fire and explosion-proof design
• Compact, IP65 design for outdoor installation
• Plug-and-play connection to the GB-LBS-PRO control box
• Intelligent communication and real-time monitoring
• Environmentally conscious design, ≥ C2 corrosion protection class