Modern calculators come in a wide-variety of shape and sizes, but they all rely on one thing — power.

The capacity of your calculator battery is generally measured in milli-Ampere hours (mAh). This indicates how much power the battery can hold. The higher the mAh rating, the more calculations you can expect to receive.

Interstate Batteries offers a large selection of calculator batteries from well-known companies such as Casio, Hewlett Packard and Sanyo. Our batteries are built to the highest standards with the most advanced technology by the industry’s largest battery manufacturer.