MPPT Solar charger 25A 12v , max solar power 300w Max PV array support up to 300W and max PV input Voc 50V. MPPT range 15-37V. MPPT algorithm with 3-stage charging protocol and max up to 25A charging current for 12v systems Support 12v lead acid and other battery types up to 14.7V max (adjustable voltage through customized type 05 setting) Built-in load port for small non-inductive DC load connection such as light LCD backlight display, fanless thermal design with durable metal heat sink