Power Supplies & Batteries > PRAM/Clock Batteries

Some Macs used replaceable batteries to maintain settings and the system clock when the machine is switched off. Here you can see the ones we have for sale.

You can see the Macs these products are compatible with on their product page, or if you want to see just the parts we have available for your specific Mac, you can search for it here by serial number or other identifier.


Search for any Mac model. You can search by name and date, as well as any of various identifiers such as: serial number (Macs made before 2021), part number, model identifier, model number and EMC number.

To search for a serial number, enter the serial number on its own. Other identifiers and keywords can be combined.

You can also search for a macOS version to see all Macs compatible with it.

Once you have found your Mac, you will find detailed specs for it and see fully compatible products, repairs, and upgrades for your exact machine.

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    Product Name   Price
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 MacUpgrades      3.6V (half AA type) Lithium PRAM/Clock Battery for Mac - In Stock  £10.80 
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 MacUpgrades      3V Coin Cell Lithium PRAM/Clock Battery - In Stock  £2.40 
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