72W adhesive back thin film flexible solar panel adhesive-backed thin film flexible solar panel:weight < 4kgrs , vpm 15,4v , isc less 4,5 amp , voc less 46,5v . Certified UL, IEC 61646 and IEC 61730, IEC 61215 ,CE Product warranty: Free from defects in materials and workmanship for 5 years.Power warranty:at least 20 years.Reliability..