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PB G4: battery life in standby mode

Message #1 - Posted 2003/07/07 - Martin Trautmann

Hi all,

I was told that the Mac PowerBook G4 does wake up from standby mode almost instantiously since the RAM is not cashed to disk and everything is put into a sleep mode, but the RAM will always be refreshed by battery current.

How much is the battery consumption e.g. of a PowerBook G4, 15", 1 GHz, with 1 GB of RAM?

Are all the current PowerBooks / iBooks working the same here?

Kind regards
Martin

Message #2 - Posted 2003/07/07 - Tom Harrington

Previously, Martin Trautmann wrote:

I was told that the Mac PowerBook G4 does wake up from standby mode almost instantiously since the RAM is not cashed to disk and everything is put into a sleep mode, but the RAM will always be refreshed by battery current.

Sort of but not quite correct. The RAM is powered by the battery, but it does not need to be refreshed. It's static, and draws a minimal amount of power, nowhere near as much as when it's on.

How much is the battery consumption e.g. of a PowerBook G4, 15", 1 GHz, with 1 GB of RAM?

I've never pushed mine to the limit, but I have had it sleeping on battery power for as long as a couple of days with no trouble.

Are all the current PowerBooks / iBooks working the same here?

I think so.

Tom "Tom" Harrington
Macaroni, Automated System Maintenance for Mac OS X.
Version 1.4: Best cleanup yet, gets files other tools miss. See http://www.atomicbird.com/

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