Rugged, durable, and rigid. The Boulder 50 Solar Panel is built with strong tempered glass and an aluminum frame with added corner protection for temporary or permanent installation. Equipped with an integrated kickstand to help get optimal angle to the sun. Use with a Goal Zero portable power pack or portable power station to charge your gear day or night. The solar panel does not hold a charge it produces power when it is exposed to sunlight. Connect it to recharge a portable power station. The Boulder 50 is best used for recharging Goal Zero Sherpa's and Yetis.   50 Watt (14-22V) panel features integrated kickstand providing optimal angle placement Built with strong tempered glass and an aluminum frame with added corner protection Solar port (blue, 8mm) output: 14-22V, up to 3.5A (50W max) Solar port (blue, 8mm) input chaining: up to 150W total Chainable: up to 150 Watts Weight: 12.4 lbs (5.6 kg) Dimensions: 21.75 x 26.75 x 1.75 in (55.2 x 70 x 4.4 cm) Rated Power: 50 Watts Open Cir