... Weight (kg)Wp (W)Vmp (V)Imp (A)Voc (V)Isc (A)solar cellsYHM300-36B30035.28.542.49.1812*61950× ... .4YHM50-18B5017.32.8921.53.189*4670× 540× 35≈ 5.5YHM40-18B4017.62.2721.62.59*4620× 540× 35≈ ... 10 years, 80% of 25 years.Remark: Adding letter A after type indicates mono-crystalline cell, adding letter B indicates ... CE, TUV, VDE, IEC, SGS, ROHS Short circuit voltage (A) 5.65Cell conversion efficiency (%) 18%