Model Number: 1-3K Key Specifications/Special Features: Input voltage/frequency: 220Vac±25% 50HzOutput voltage: 220Vac±10%Output frequency: 50 Hz ±1 HzDischarge wave: form circuit sine waveConversion time: Around4-10msStandby time: 4～20Mins (1 PC＋115inch display)Charging period: 6 hours charge to 90%Long term based on the customer's choice of batteries to set a non-permanent machine 12 hours can be charged to 90% capacityNumber of batteries: NO or 12 V 7 Ah x 4pcsOpera. Envir.Tem.0-40°CHum.0-90%Appe. size (mm×mm×mm): 395x145x220Pack. size (mm×mm×mm): 397 x 146 x 205N/W（kg）13.4kgR/W（kg）14.0kg