rodfromsept-iles
Level 1
(8 points)
Notebooks
Q: Mac Plus battery spec ?
I would like to try and start up some old Mac Pluses. Some have had the batteries removed. I would like to try and get my hands on a couple of good batteries but I am not sure of the specification other than Alkaline, 4.5V. Can anyone help me ? The size, dia. and length, will be useful I think. I don't know what the technical term is, perhaps form factor.
MacBook Pro, Mac OS X (10.7.3), Canada
by Jan Hedlund,Solvedanswer
Jan Hedlund
Level 6
(9,864 points)
Yes, it is a special (approx. 17 x 50 mm) 4.5 V alkaline battery. Try a web search for 523 or PX21 (or an equivalent type).
https://en.wikipedia.org/wiki/List_of_battery_sizes
It is possible to start up a Macintosh Plus without a battery in place (but the battery would retain time and date settings).
