230W Solar Panel 1. 5 yrs Quality Warranty; 2. CE Certification; 3. High efficency Solar Cells, 17%; 4. Assured Life Span: 25 yrs Performance Assurance 1) 3 years warranty for PV module, materials and corresponding fittings; 2) 90% output of rated power after 10 years; 3) 80% output of rated power after 25 years under Standard Test Conditions Type SD-230W Silicon Parameters Poly-crystalline silicon Maximum Power Watt 230W Production Tolerance +/-3% Maximum Power voltage V 28.4 Maximum Power current A 8.1 Open circuit voltage V 35.6 Short circuit current A 8.75 Size of module (wide and high) 1643mm 987mm Frame (type, material and thickness) Anodized Alu. Alloy frame,50mm thickness Number of cells 60pcs Size of cells (wide and high) 156mm156mm Weight per piece (Kg) 19 Type of junction box PV junction box Cable type and length, Connector type PV cable, 0.8m Plug and socket Maximum system voltage 1000V Temperature coefficient of Isc +0.05% per degree Temperature coefficient of Voc -0.34% per degree Temperature coefficient of power -0.45% per degree Temperature coefficient of Im +0.05% per degree Temperature coefficient of Vm -0.34% per degree NOCT (Nominal operating cell temperature) 47 degree(+/-2) Insulation >=100 M Voltage Standoff AC2000V, DC3000V Wind Bearing 60m/s (200kg/sq.m) Impact Resistance Hail Impact Test 227g steel ball fall down from 1m height Converslon efficiency Cell converslon efficiency >15.7% Quality guarantee 5 years product warranty and 25 years -20% of power