UPS850VA/450Watts,AVR, CPU control,SMT PCB, LCD display,USB,4 battery backup &2 surge protection,12/ ... Battery Modules1×12V/9.0AhRuntimeFull Load 2.5 MinutesHalf Load 6.0 MinutesCharge Time12 Hours(90%)LCD Status DisplayNormal,Fault,Battery, ... Charge,Overload,Load,Battery CapacityAudible AlarmBuzzerAC Unusual/Battery Low Voltage ...