... 1.protection of battery over charge 2.simple led display shows working status clearly 3.Adapt to wide range ... ,stations ,airway ,industry and mineral,frontier,islands,pastoral areas ,solar offgrid power system ,ect .2.Characteristics♦ MCU intelligent control, ... span of battery♦Simple led display shows working statue clearly♦Protaction against joint-reversed of solar module ,safe and reliable♦Adapt ...