3.6 Volt, 950 mAh
Lithium 1/2 AA CMOS/PRAM Battery
Apple part number: 922-1262. The Tadiran TL2150 high-current inorganic
Lithium (and later version TL5902) is the specified replacement part for Apple
Macintosh systems beginning with the Power Macintosh 6100 and some Mac-clones.
Don’t be fooled by less expensive batteries! These batteries are specifically
engineered for the Macintosh "SoftKey" circuit and provide extra-long life.