Features: Solar charge controller comes with a big LCD display that can clearly indicate the status and data, it can be conveniently switched modes and parameter configuration. The solar regulator is only suitable for lead acid batteries:OPEN, AGM, GEL, not for nickel hydride, lithium, Liions, or other batteries. Short-circuit protection,open-circuit protection,reverse protection,over-load protection, more safty for using, suitable for home, industrial, commercial etc. This controller can only use photovoltaic panel as the charging source, do not use DC or other power supply as the charging source. Specifications: Batt voltage: 12V/24V auto Charge current: 50A Discharge current: 50A Equalization: B01 sealed 14.4V B02 Gel 14.2V B03 flood 14.6V Float charge: 13.7V(defaul,adjustable) Discharge stop: 10.7V(defaul,adjustable) Discharge reconnect: 12.6V(defaul,adjustable) USB output: 5V/3A Self-consume: <10mA Operating temperature: -35~+60 degree C Weight:150g Size:13.3*7*3.5cm Packing List: 1X 50A Solar Charge Contorller 1X English User Manual