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Odd Battery Life Display
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Fresh-Faced Recruit
Join Date: Dec 2003
Location: Edmonton, AB, Canada
Status:
Offline
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I am getting very good life out of both of my batteries (3.5-4 hours each), but the battery life display doesn't show up accurately. It seems to decrease wildly at some times, and then very slowly at others, even if I am running the same programs, app's, etc. For example, once my PB displays 1:20 remaining battery life, it will sit at 1:20 for a long time (sometimes over 30 minutes). The percentage remaining seems to be much more consistent and accurate.
Since the new battery update, this is occuring less, but it hasn't stopped.
I'm just curious if this happens to anyone else out there. I'm running a newer (month old) 17" PB.
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Dedicated MacNNer
Join Date: Aug 2002
Status:
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Yes, it happens to me as well.
Sometimes I'll remove my PB from AC with a full charge and then shortly there after receive a notice that I'm running on reserve battery power. I look at the time remaining which states 0:09 minutes. A few moments later it states 3:30+ hours.
Also, even when on AC power the battery reports 99% charge when the menu states "Battery is charged".
Running 10.3.2 with battery update on a two week old 12" PB Rev. B.
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MacBook Pro
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Addicted to MacNN
Join Date: Oct 1999
Location: The Tollbooth Capital of the US
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Well I am getting where the POwerbook is plugged in and it says it's charged but it says 99% then it would drop 1 percent every day but still say it was charged. Odd.
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"Evil is Powerless If the Good are Unafraid." -Ronald Reagan
Apple and Intel, the dawning of a NEW era.
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Senior User
Join Date: Mar 2002
Location: between a rock and a casbah...
Status:
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Originally posted by gbafan:
Yes, it happens to me as well.
Sometimes I'll remove my PB from AC with a full charge and then shortly there after receive a notice that I'm running on reserve battery power. I look at the time remaining which states 0:09 minutes. A few moments later it states 3:30+ hours.
Also, even when on AC power the battery reports 99% charge when the menu states "Battery is charged".
Running 10.3.2 with battery update on a two week old 12" PB Rev. B.
This is exactly what is happening with my brand new (less than 24 hrs!) 15" superdrive. It is very odd indeed, and not a little worrying. I thought the recent battery update released by Apple was supposed to address this issue. However, according to various bods on these boards and some friends of mine with Powerbooks, it seems to have made it worse in some cases.
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Forum Regular
Join Date: Nov 2003
Location: TX
Status:
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What you guys have mentioned have been discussed in various other threads before.
1. The built in "battery life remaining" counter is an estimate of how much your longer your battery will last given your current usage pattern (ie no of programmes running, accessing drives etc), so its actually a very approximate timer, especially if your usage pattern changes, ie if you exit some programmes or turn on bluetooth. The percentage counter is a slightly better estimate.
2. The charger actually allows the battery to fluctuate between 95-100%, it allows it to drop to ~95% before trickle charging to top it off, its something to prevent overcharging as that is bad for battery life.
I've not had sudden alerts telling me that I'm on reserve power and then reverting to full charge before though... does that still happen despite the new battery update?
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