... , RoHS approved 2,High efficiency 3,25 year warranty 15.7% Efficiency Polycrystalline Solar Panel, PV Poly Solar Module1. Key Features ... cells, delivering a module series efficiency of up to 15.7%, minimizing installation costs and maximizing the power output of your ... to strengthen the load hold and to stand against high wind.2. Quality and Reliability (1) Every cell in individually inspected ...