... silicon solar panels 190 w Size: 1580 x808x35mm Net weight: 14.5 KG Working voltage: 36.73 ... v two kinds, small miniature system, also can use nimh battery, nickel cadmium battery and lithium battery. ... power, therefore need to use DC - AC inverter. In some occasions, need to use a variety of voltage load, ... power we say 100%, until the evening electricity use 20%, battery and 80%, the second day, ...