51.2V-5KWH Battery Module Product Features * Higher Safety Installed with automatic fire extinguishing device to prevent fire hazards. * Longer Life External parallel mode (all the cables between each module and the inverter with same length) which makes longer battery life. *Better Parallel Function External parallel mode (more modules could be paralleled). * Higher Standard UL approved breakers; 2.5m to 3m Customized UL approved EV-standard cables. *Clean and Special Appearance Customized white RAL9003 battery box. *Stronger Protection Special pressure plate design inside the battery box; Resin plate protection is added between the battery and the upper cover of the battery box.