A coin cell (also known as a button cell) is a small round cylindrical battery. They consist of a single cell and are typically 5-20mm in diameter but often only a few millimetres thick therefore having a similar profile to a coin or button.
A coin cell (also known as a button cell) is a small round cylindrical battery. They consist of a single cell and are typically 5-20mm in diameter but often only a few millimetres thick therefore having a similar profile to a coin or button.