UPS850VA/450Watts,AVR, CPU control,SMT PCB, LCD display,USB,4 battery backup &2 surge protection,12/9Ah battery ModelUPS- ... 2.5 MinutesHalf Load 6.0 MinutesCharge Time12 Hours(90%)LCD Status DisplayNormal,Fault,Battery,Charge,Overload,Load,Battery CapacityAudible AlarmBuzzerAC ... -condensingDimensionInner Box(mm)350×160×255Unit Weight(kgs)7.4 LCD UPS DIGITAL 850VA