3V Newer Technology Lithium CR2032 coin cell
PRAM Computer Clock Battery
Macintosh computers contain an internal backup battery to maintain system settings, such as the date and time, when the computer is turned off . The battery may last up to five years though actual life is determined by shelf life of the battery and usage patterns of the computer. The batteries used in the Macintosh computers listed below are lithium 3V "coin cell" batteries.
This battery is an exact replacement for the CR2032 or 922-6476 coin cell batteries in the below listed models.