ZOUPW 200W Solar Panel Portable ETFE 20V Charger for Power Station RV Camping
STC (Standard Test Conditions): Refers to the solar panel’s surface temperature of 77°F/25°C, air mass of1.5,and solar irradiance of 1000W/㎡. A+ Monocrystalline Solar Cells for 23.5% Conversion Efficiency.