What are common things solar cells can be found on? Can solar cells charge a reusable battery?

Source: Tower Sign and Signal

Solar cells can and are used to charge reusable batteries. For example, you see this in solar cars. One of the limitations of solar photovoltaics is that they produce energy when the sun is shining and produce none without light. This could be a problem at night if you don't have any other energy sources or ways of storing the energy produced during the day. If we transitioned to mostly solar energy in the larger electric grid, this could be a problem if batteries can't store energy generated during the day for use at night.

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Solar cells are found on many things. You may be most familiar with solar calculators (the calculators that do not run out of batteries--note that, even indoors, they generate electricity since they are still receiving light, albeit not usually as bright as that seen outside). Solar cells are now used to power road signs and some traffic lights. They are also found in garden lights and other outdoor lighting. Emergency phones in remote places often also have solar cells to cut down on the cost of sending electricity to those places. You can use solar cells to charge your electronic devices. People and businesses are now starting to install solar cells on their buildings/houses in order to reduce their energy costs. Satellites also often use solar cells for power. Solar cells are found on an increasingly wide array of things!