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Original post by: Zjef van Driel ,

Text:

Hi Shaolin,

The PRAM battery should have 3.0 Volts, that means that its correct. (When these kind of batteries are "dead" they start having less than 3.0, like 2.6....).

The bettery is used the "retain" your configuration for (startup sound volume, startup Screen light level, etc...) Without the battery these values would be erased after restarting your MB.

Hope it helps you

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