Refurbished. Refurbished phones are used phones that have been inspected, tested, and restored to full working condition at a factory or authorized service center. They may feature new housings or other new parts, or they may simply be used phones that have been tested and certified.ome âº Glossary âº. Refurbished phones are used phones that have been inspected, tested, and restored to full working condition at a factory or authorized service center.
Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.enewable energy flows involve natural phenomena such as sunlight, wind, tides, plant growth, and geothermal heat, as the International Energy Agency explains: Renewable energy is derived from natural processes that are replenished constantly.
Is fuel cell a renewable source of energy? No, it is not a renewable source of energy.   Fuel cell is a means of storage energy, for example hydrogen can be produced from any primary energy source; renewable (asâ¦ solar energy) or exhaustible (as coal or oil) and then stored as energy in the fuel cell. When energy is needed later on as electricity then we can get from the fuel cell.