Replacement Battery for Macintosh 512Ke PRAM

Exell A21PX Replacement Battery for Macintosh 512Ke (Enhanced) PRAM

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Battery Replacement for Apple Mac 512Ke PRAM

The Exell A21PX is a compatible battery replacement for the Apple Mac 512Ke (Enhanced) PRAM.

  • Type: 4.5V PRAM Battery
  • Fits: Apple Macintosh 512Ke (Enhanced) PRAM
  • Battery Model: Exell A21PX

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What kind of battery do I need for my Apple Mac 512Ke PRAM?

If you have a 1980’s vintage Macintosh 512Ke (the “e” is for “enhanced”) and are looking for a battery to keep your 512Ke PRAM running properly so that you don’t have to keep changing or updating your configuration settings every time you boot up your Mac, the Exell A21PX battery is the proper replacement battery for the original but now discontinued 523 battery that the Mac 512Ke PRAM used.

The A21PX battery replacement for the Apple Mac 512Ke PRAM is cylindrical and has flat contacts on each end. It measures approximately 16.8mm in diameter and 49.9mm in height.

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Where can I find the battery compartment for the 512Ke PRAM battery?

The 512Ke PRAM battery compartment is most likely accessible from the back of the computer.

What does PRAM mean?

PRAM stands for “Parameter Random Access Memory” (pronounced “P-ram”). All Macs have a battery that help keep the clock running as well as store system settings in its PRAM. The PRAM stores configuration settings such as display options, time zone setting, speaker volume, and startup volume.

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