Battery contacts are physical connection points between a battery and the device it powers. They are usually found on the top of batteries and are most often made of metal. The contacts can come in any number of shapes and sizes, and must be designed to ensure proper electrical connection between the battery and the device. Battery contacts can also be designed to ensure proper mechanical and environmental connections, such as protection from dust, dirt, shock, and vibration. The design of the battery contacts will depend on the type of battery and device.