CR2032 battery box holder comes with spring clip design, you can easily to put the battery in it.It can hold standard 2032 size batteries, the pin design is easy for soldering and connection.There are 2 positive pins, 1 negative. Positive pins are 0.40" apart. Negative pin is centered between positive pins, 0.15" above them. You only need two but three providers stiffness when mounted on a board.