Charge Specifications:Recommended Charge Current - 20A or 50a MaxMaximum Charge Current - 100ARecommended Charge Voltage - 13.6V - 14.6 VBMS Charge Voltage Cut-Off - 15.6 VReconnect Voltage - 15.2 VBalancing Voltage - 14.4 VSafety and Protection Specifications:Case Material – ABSTerminal Type – M8Built in Automatic Battery Protection System - InternalAutomatic Low Voltage Disconnect - 9VAutomatic Short Circuit Protection - InstantAutomatic Over Voltage Protection - 15.8VAutomatic Reverse Polarity Protection - InstantFlame Retardant Electrolyte - YesLength Way Circuit Boards - YesAutomatic Internal Cell Balancing - YesAutomatic Fault Recovery - YesExplosion Proof Stainless Steel Cells - Yes Temperature Specifications:Discharge Temperature -20ºF to 140 ºF (-20 to 60 ºC)Charge Temperature -4ºF to 113 ºF (-20 to 45 ºC)Storage Temperature 23ºF to 95 ºF (-5 to 35 ºC)BMS High Temperature Cut-Off 176 ºF (80 ºC)Reconnect Temperature 122 ºF (50 ºC)