... ; 3,Continous raining days : 3-15days; 4,System life : > 20 years *Solar Street light Features: 1,high efficient solar panel,monocrystalline silicon ... : 10-14 hours daily9,Continous raining days : 3-15days ; 10,System life : > 20 years11,20'ft : 50-100pcs 12,delivery date ...