A solar battery is a rechargeable battery that integrates a solar cell with battery power storage. the second meaning of solar battery is rechargeable batteries which have been developed specifically for use in photovoltaic systems or are just used for. They are used especially in stand-alone systems for the storage of energy produced by solar panels and batteries as a buffer when major consumer operation. Often, the term is also commonly used for built-in solar power applications batteries, even if they are not specified for it.