12V Solar Battery charger is a device that uses solar energy to charge the batteries. This type of charger is commonly used for a variety of applications, including cars, boats, RVs, and other vehicles that require a battery. A 12V solar battery charger consists of a solar panel that converts sunlight into electricity, a charge controller that regulates the charging process, and cables that connect the charger to the battery. The charger is designed to be easy to install and use, with no need for an external power source or complicated wiring.