The EcoFlow 400 W solar panel is portable, foldable, compact, and very lightweight. Whether camping or engaging in outdoor activities, you can simply unfold the solar panel and start generating solar power in seconds. The EcoFlow 400 W solar panel is designed to produce maximum energy at any time of day when paired with an EcoFlow power station. It has a high conversion efficiency of 21-22%, and the EcoFlow MPPT power station algorithm ensures improved performance in cold and cloudy environments. The EcoFlow 400 W solar panel is dustproof and waterproof, making it ideal for outdoor activities such as camping and hiking due to its seamless, one-piece construction.