... Pure 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,off grid inverter ... 220VInversion emergency time (H) Battery capacity (AH)= ----------------------------- ×0.70η Discharge current (A)Output frequency50Hz, 60HzUnder-voltage protectionSingle ...