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BugeyeSTI

macrumors 604
Original poster
Aug 19, 2017
7,476
9,468
Arizona/Illinois
How much of difference does it really make? I’ve read about the difference in materials used, discharge rates and temperature range but, the voltage seems identical.. It seems the biggest difference is the CR might last 3-4 years and the BR should last 7 due to the BR’s ability to handle a high temperature environment.

I’m referring to the pram battery on the motherboard of a 27’ iMac..
 
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