A solar charger is an electrical device that captures solar energy to facilitate the charging of batteries or other electronic gadgets. Generally, it consists of the following components: a solar panel, a charge controller, and various ports for charging. The solar panel collects sunlight and transforms it into electrical energy. This energy is then regulated by the charge controller to ensure that no overcharging occurs and the battery charges safely. There are different forms of solar chargers; small portable units can be used to charge mobile devices such as smartphones or tablets, and off-grid application batteries can be charged using larger systems. Solar chargers are an incredibly versatile means of power, which is why it can be used without any sources of fuel or electricity.