... need maintenance of advantage and so on .The solar home system include: solar panel, solar panel bracket ,battery, ... solar charge controller, power box and so on.System design:Item Equipment Specification unitsquantity1solar panel50w /12vPCS12Battery 50AH/ ... 16Cables and screwsSet 1FunctionOperating load with the 50watts system Item Equipment Specification unitsquantityWorking hours/per day 1Energy ...