Battery sockets are plastic bases with metal plates or springs that are built into various electronic devices. They usually serve as a holder for different types of batteries. They are soldered and connected to various electronic boards, integrated circuits or microchips that they need to supply power. Battery holders can be part of devices such as flashlights, battery chargers, calculators, scales, as well as the base for a spare or main battery for a screwdriver, drill, angle grinder or other cordless tool.
Battery slots can be the basis for a professional or hobbyist project. They can be a spare part for a damaged or broken holder of a device that we want to repair, and there are also transition type holders when it is necessary to adapt the power supply from one battery model to another.