3V Lithium CR2032 coin cell PRAM Clock Battery for iMac , Mac Pro, Mac Mini, and PowerMac G5

922-8802 iMac-Mini-Xserve, Logic Board Coin Battery NB-1893W
This is an internal backup battery for Macintosh desktop computers. The PRAM battery maintains 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.
Apple part number: 922-8802

Compatible models: A1224-Early 2009-MB417LL, A1224-Mid 2009-MC015LL, A1311-Late 2009-MB950LL-MC413LL, A1225-Early 2009-MB418LL, A1225-Early 2009-MB419LL, A1225-Early 2009-MB420LL, A1312-Late 2009-MB952LL, A1312-Late 2009-MB953LL, A1312-Late 2009-MB953LLCTO, A1283-Early 2009-MB463LL/A-MB464LL/A, A1283-Late 2009-MC238LL/A, A1283-Late 2009-MC239LL/A, A1283-Late 2009-CTO, A1279-Early 2009-MB449LL/A, 8Core, A1279-Early 2009-CTO, ,

Compatible Mac info. : 20-inch 2.66GHz iMac , 20-inch 2.0GHz iMac , 21.5-inch 3.06GHz iMac , 24-inch 2.66GHz iMac , 24-inch 2.93GHz iMac , 24-inch 3.06GHz iMac , 27-inch 3.06GHz iMac , 27-inch 2.66GHz i5 iMac , 27-inch 2.8GHz i7 iMac , 2.0GHz Intel Core 2 Duo Mac Mini , 2.26GHz Intel Core 2 Duo Mac Mini , 2.53GHz Intel Core 2 Duo Mac Mini , 2.66GHz Intel Core 2 Duo Mac Mini , One 2.26GHz Quad-Core Intel Xeon Xserve , Two 2.26GHz - 2.66GHz - 2.93GHz Quad-Core Intel Xeon Xserve

922-8802 iMac-Mini-Xserve, Logic Board Coin Battery