Recharge faster wherever you roam with the Nature's Generator 400W Folding Solar Panel, delivering serious portable solar output in a foldable, travel-ready package. High-efficiency monocrystalline cells with around 23% cell transfer efficiency maximize energy capture even in less-than-ideal sunlight. It folds down compactly with built-in steel support stands, so you can deploy it in seconds without extra mounting equipment. Rugged, weather-resistant construction stands up to regular use in camping, RV, and off-grid environments, and two of these panels can fully charge a Powerhouse in about 8 to 10 hours of optimal sunlight. When 200W isn't quite enough, this panel doubles your portable solar capacity without doubling your setup time.