40-Watt Briefcase Solar Panel by Nature Power.

Solar Panel Features: Aluminum Frame, Rugged Design High-Efficiency Solar Cells, Up to 2.22 Amp Continuously recharge your 12V batteries with solar power Connect additional panels for a faster charge Easily folds into a briefcase for convenient storage and transportation Warranty: 2-year Limited Warranty Included Accessories: 1 x 40W Folding Solar Panel Battery Clamps 2 Mounting Poles 1 Charge Controller Solar Panel Specifications: Type: 40 Watt Monocrystalline Maximum Power: 40 Watt Maximum System Voltage: 600V Current at Pmax (Imp): 2.22 A Voltage at Pmax (Vmp): 18.0V Short Circuit Current (Isc): 2.44 A Open Circuit Voltage (Voc): 21.2V Tolerance: ± 3% Operating Temperature: -40oC to +85oC Material: Aluminum, Glass Construction & Steel