This Line Interactive UPS Jigor Deba Pro 720-watt uninterruptible power is backed by two 12V batteries. It accepts a wide input range of 145-290 volts and provides a stable 220-230 volt output at 50 Hz, which is compatible with most office and home devices. Built-in surge, short-circuit, and charging-overload protection protects equipment from voltage spikes and faults. This unit is fully recharged in about 3-4 hours and can keep essential equipment running for about 15 minutes during a power outage