50W Single Board with 40A Controller PV System Solar Panel 1. Using high-efficiency monocrystalline silicon solar cells, the power generation efficiency is about 1.2 times that of conventional polycrystalline silicon, and the overall area is smaller under the same power. 2. Using the latest component packaging technology, it is thinner, lighter, softer and has a longer life. 3. The surface is made of PET material, which is more wear-resistant and improves the absorption efficiency of sunlight after special process treatment. 4. High light transmittance, safe and reliable, not afraid of high temperature, no danger of combustion and explosion. 5. The junction box adopts IP67 waterproof design, contains bypass diodes, and the circuit adopts overcharge and reverse current protection design. 6. Use photovoltaic special cables and connectors, safe for outdoor use, waterproof, high temperature resistance, and weather resistance. The connector is easy to use, plug and play. 7. This product is a solar module. It is recommended to use it with controller and battery. It can be used in various scenarios such as home, camping, RV, yacht, street lamp, solar power station, etc. Specification: 1. Power: 50W 2. Output Tolerance: +- 3% 3. System voltage: Up to 700V DC 4. Open circuit voltage (Voc): 16V 5. Short circuit current (Isc): 3.12 A 6. Power supply voltage (Vmp): Up to 19.2V 7. Supply current (Imp): Up to 3.43A 8. Battery efficiency: 21% 9. Operating temperature (NOCT): 45+-2 degree C 10. Temperature range: -40 degree C～+80 degree C 11. Battery Quantity: 32pcs