... TypeSealed Maintenance-FreeLead-AcidBatteries Q'TY12V×3Pcs12V×8Pcs12V×20PcsStandard Backup Time(Full Load/Half Load)5/12Mins7/16Mins5/13Mins6/15Mins8/20MinsCrest ... , Inverter, Bypass, Battery, Load, Battery Mode, Frequency,UPS Fault IndicatorTransfer Time of AC to DCZeroBattery Low Voltage31±2V83±2V200±2V210±2VCharge ...