There are different kinds of solar cell products, everything from functional and highly technological spotlights with high lumen counts to atmospheric decorative lamps that fit in basically any outdoor environment. Common to all solar cell products is their need for sunlight in order to function.
The inner workings of a solar cell product contain batteries that are charged with solar energy. To keep the lamp shining long and bright, it needs as much sun as possible during the day. For maximum effect, solar cell panels should face towards the sun. It is also important to remember that at night no other lighting fixtures or street lamps should light the solar cell lamp’s panel; brightness will make it think it’s daytime and it won’t light up.