Warranty: 1 Year Features: Compact size design Cold start function Generator compatible Auto restart after power recovery Boost and buck AVR stabilization Simulated sine wave output High reliability microprocessor control Technical Specifications: Battery: 12V 7Ah Recharge time: 6 hours Input Voltage: 230V AC Voltage Range: 140–300V AC Output Voltage: 230V AC Transfer Time: 4–13 ms Noise Level: <40dB Protection: Overload / discharge / overcharge