How long does a 3V coin cell battery have a shelf life? Button battery, also known as button battery, refers to a battery with a size like a small button, generally speaking, the aperture is relatively large, thin and thin (compared to column batteries such as No. 5 AA and other batteries in the sales market). Button batteries are distinguished by the appearance of the battery, and the same matching batteries are classified as column batteries, square batteries, and special-shaped batteries. The shelf life of button batteries with different models and specifications is generally around 5 years, and most can reach ten years. For the production date of button batteries, generally there is a production date on button batteries, but the vast majority of domestic batteries do not have a time mark, only imported will appear.