Series: Smartower Input Voltage Range: 110/115/120 V+/-25%, DIP Switch Selectable Input Frequency: 50/60 Hz Output Voltage: AC Mode: Increase 15% (input -9%~-25%), Decrease 15%(input +9~+25%) Inv. Mode: 110/115/120 V+3%~-10% Outlets: 6 Outlet Type: L5-15R Battery Run Time: 9 minutes(half load) Battery Recharge Time: 2~4 hours to 90%