Rating 650VA (W) 390W Input Voltage (V) 160+10% Output Frequency (Hz) 50Hz+10% Transfer Time (ms) <6ms Voltage AVR Mode 230V AC Nominal Battery Type Sealed Lead Acid Maintenance Free Recharge Time 90% Capacity After 5Hours Backup 7-15 min ( depending on the connected Load) Output Sockets Universal Sockets Panel Display Mains On, Mains Full, Battery Low