Designed For Solar Power StationComes with 4*DC Connectors, this 40W foldable solar panel compatible with most portable power stations/solar generators on the market and charge fast with a 22% high conversion efficiency. It also can charge your phone, tablet, laptop, mini refrigerator etc, keeps your devices full of juice, without having to rely on a wall outlet. High Conversion EfficiencyGreenMagic 40W monocrystalline solar panel has a high conversion efficiency of 22%, its able to produce electricity under the condition of insufficient light (Recommend > 40000Lux), charge your devices in shorter time