A solar cell, or photovoltaic cell, is an electronic device that converts the energy of light directly into electricity by the photovoltaic effect, which is physical and chemical phenomenon. Assemblies of solar cell are to make solar modules that generate electrical power from sunlight, as distinguished from a “solar thermal module” or “solar hot water panel”. A solar array generates solar power using solar energy. Solar backup solution is one of the cost-effective solution which is an advantage in the long run and it is also easy to maintain. The best type of batteries for your solar panel should be made of lithium-ion, which are the safest and most reliable solar batteries available.