[Materials] High-quality A-grade solar cells, higher efficiency; surface made of tempered solar glass with weatherproof coating. [Technical data] Rated power (Pmax): 50W -- max. Voltage (Vmp): 18.10 V – Max. Current (Imp): 2.78A -- Open circuit voltage (Voc): 22.50V -- Short circuit current (Isc): 2.96A -- Max. System Voltage: 1000VDC -- Operating Temperature : -45 °C to +85 °C – Dimensions: 662 x 521 x 35 mm – Weight: 4.20 kg Certificates: SGS-TÜV Saar tested according to valid standards [Application] On-grid or off-grid for ecological houses, cottages, caravans, motorhomes, boats etc. for all needs around a self-sufficient and mobile energy supply. Guarantee of plus tolerance (-+3%), performance warranty up to 10 years with 90% and up to 25 years with 80%