Broadly speaking, there are two requirements for a button-cell battery to serve as a safe replacement: size and voltage. An LR44 measures in at 0.46 inches in diameter and 0.21 inches in height.

safer version of a button or “coin cell” battery. The round batteries, small as buttons and shiny as coins, are prized for the energy they pack at their size. In households, they have become ...

Many of them are powered by what are called button cell (or coin cell) batteries, aptly named because of their shape and small size. These batteries are powerful and compact. Unfortunately ...