8 Watt Solar Panel plus HQRP® Coaster; High-efficient 8W solar panel (size of 5w); Maximum Power Voltage:17.68V;Open Circuit Voltage:22.1V; Maximum Power Current: 0.46A; Short Circuit Current: 0.51A; Dimensions: 254x294x23 mm; High-efficient solar cells construction; Light anodized aluminum frame; Junction box is protected by silicone from ingress of moisture. 1 Year Full Quality Warranty! 10 Years Limited Power Performance Warranty. Compare at $70 and over.