Button batteries, also known as watch batteries or coin-type batteries, are one of the shape classifications of batteries, referring to small batteries in the shape of buttons, buttons, coins, beans, etc. There are many styles of button batteries, ranging from large to small in diameter, and thin to thick. Most button batteries are primary batteries, which are also dry batteries, but they are obviously different in appearance from common cylindrical batteries.
Search for the most popular sizes for watches, hearing aids, and remote controls. Homyet Parts will bring you the best ideas.