... Sine Wave Inverter, Off-grid inverter SPV5000 2,5000W Inverter 3,DC/AC Inverter 4,CE Certification 220V Pure Sine Wave Inverter, Off-grid inverter SPV5000 pure sine wave power inverter ,off-grid inverter ... current (A)Output frequency50Hz, 60HzUnder-voltage protectionSingle 12V battery is 9.5~10.5V (Other ... multiplied)Output waveformSine waveOver-voltage protectionSingle 12V battery is 14.5~15V (Other ...