When the solar cell is connected to the storage battery, it is best to use a photovoltaic charge controller, which can control the output voltage of the solar cell and protect the battery from being overcharged. At the same time, when the solar cell is not generating power at night, it can prevent the battery from flowing backward .
The connection method is as follows:
Solar cell---photovoltaic controller---battery---DC load.
While the solar energy is charging the battery, it is entirely feasible for the battery to supply power to the outside. In this case, the electricity used by the load will directly use the electricity of the solar battery first, and the rest will be charged into the battery; on the contrary, if the power of the solar battery is not enough , will draw power from the battery at the same time.