A great battery set for all kinds of items: Calculators, Cameras, Various Toys, and much more.
For example: Laser Pointers, Calculators , Remote Control Devises, Key-less Entry Remote Devices for Automobiles, some Implantable Cardiac Defibrillators, and Artificial Cardiac Pacemakers, and Other Uses include Small Electronics Products, Toys of Various Types, Watches and more.
•AG13 Alkaline Button Battery
•Diameter : 0.454 inches
•Minimum Operating Temperature: -40F Maximum Operating Temperature: 140F