Portable solar panels are an extremely effective, clean, and renewable way to charge a portable power station. EcoFlow 400W portable solar panels have a larger wattage than typical solar panels and are more efficient due to their monocrystalline cells. String up to three 400W portable solar panels and use with a DELTA Pro portable power station for an input of 1200W. Additionally, EcoFlow portable power stations use an MPPT algorithm to ensure a constant energy supply. Unlike static solar panels, portable solar panels are easily moved and adjusted depending on where the sun is in the sky.