Goal Zero Boulder 30M Solar PanelDescription:Rugged, durable, and rigid. The Boulder 30 Solar Panel is built with strong tempered glass and an aluminum frame for temporary or permanent installation. Use with a Goal Zero portable power pack or solar generator to charge your gear day or night.Features:Solar Capacity : 30WIdeal for : Sherpa 50, Yeti 150, Yeti 400, Yeti 1250Weight : 2949gChainable : YesCell Type : MonocrystallinePort Size : 8mmSpecifications:Charges the following:Sherpa 50 v2: 4-8 HoursGoal Zero Yeti 150: 11-22 HoursGoal Zero Yeti 400: 26-52 HoursGoal Zero Yeti 1250: 20-24 Hours (2 x Boulder 30)Solar Panel:Rated Power: 30WOpen Circuit Voltage: 18-20VCell Type: MonocrystallinePorts:Solar Port (blue, 8mm): 14-16V, up to 2.0A (30W max), not regulated