1.Pure sine wave inverter 2500w with inside charger 2.CE,ROHS Approved 3. ... .Output frequency 60HZ or 50HZ(According to your request)6.Continuous output power:2500W7.Peak power:5000W8.High-velocity cooling fan9 ... voltage ,output voltage,frequency ,add socket types. 2500w Pure sine wave inverter in-built charger