Macintosh Plus / 128 / 512 523 Battery Replacement / Adapter
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A little model to allow use of 357 button cells instead of a 523 battery in classic Macintosh computers.
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Updated at source:
Model information
- Source
- Printables
- Category
- Computers
- License
- Creative Commons — Attribution
A little shell to allow use of 3 257 button cells instead of a 523 battery in your Mac Plus or other classic Macintosh computer.
I used a left-over spring from my Ender3 (after I replaced the bed springs with better ones). And a couple of small M3 button-head screws. And a touch of super glue.
Print with supports or not, I don't think it really matters. Insert the batteries and spring (make sure all the batteries are facing the same way), and then glue the two halves together. Add the screws on the ends. Check for voltage with a multimeter, should be 4.5v or so.
Added version 2 to prevent any shorts between the spring and the negative/pos battery sides.
Version 2 uses 2 M5 8mm button-head screws, otherwise, much the same. Check the pics for the assembly. Note that the + side of the batteries faces the spring.