... .5 KG Working voltage: 36.73 V Working Solar power system consists of solar battery, solar controller, battery (group) composition. Such as the ... of each part for:(a) solar panels: solar panels is solar power system, the core part, and solar power system part of the highest value. ... , usually have a 12 v and 24 v two kinds, small miniature system, also can use nimh battery, nickel cadmium battery ...