... 2.Pure sinewave inverter 3.pure Copper transformer 4.with battery charger 5.Large charge current 48v dc ac inverter ... 4000Watts ,5000w ,6000w ,solar inverter , power inverterOutstanding Feature : copper transformer inverter , ... ,short-circuit,over-voltage,low-voltage,over-heating,etc.5.Easy to check with inverter with consice LED indication ...