Epever PWM 20A Charge Controller 300W/12V

20A Solar Charge Controller is suitable for two 150W solar panels in 12V system and four 150W panels in 24V systems. User defined working voltage or automatic battery voltage identification (12V/24V). Battery type selection (Sealed, Gel,  Flooded/AGM). The controller can not be used with big (280W->) solar panels due to their high voltage.