12V 220V 500W Modified Sine Wave Solar Inverter With Built-in Charge Controller SUS-500A Modified Sine Wave Inverter Features: Built-in solar charge controller 20A Adopt auto PV-charging control system 3.0' LED screen display. Battery reverse connecting protection,etc Universal socket, suitable for all kinds of plugs Modified sine waveform output Applicable for resistive AC loads Specifications Model SUS-500A -The built-in controller 12V/10A -Featured solar panel specifications 100~200W/18V -External battery 12V 100Ah~150Ah24V -USB output current 1000MA