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15" Unibdy MBP charging to 99%
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formerly crazyreaper
Senior User
Join Date: Jul 2007
Location: York, UK
Status:
Offline
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I think i know why, but this is my first apple laptop so im not sure, but my MBP will only charge to 99%, does this mean its lost 1% of it capacity?
bit shocking to say its not even a week old if thats the case!
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The Spammer Formally Known As Crazyreaper
Mac Book Pro 15", 2.66 Ghz C2D, 4GB DDR3 / iPhone 4 16GB
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Clinically Insane
Join Date: Oct 2000
Location: Los Angeles
Status:
Offline
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No, it doesn't mean you lost 1% capacity. This is a common laptop issue. The battery is in actuality fully charged, but the software isn't calibrated properly. Unplug it, let it run down until you start getting battery warnings, then recharge. It should charge to 100%. If not, the next step is to reset the power manager, but try this first.
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"The natural progress of things is for liberty to yield and government to gain ground." TJ
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formerly crazyreaper
Senior User
Join Date: Jul 2007
Location: York, UK
Status:
Offline
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oh cool, thanks, was a bit miffed if it was losing capacity already lol
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The Spammer Formally Known As Crazyreaper
Mac Book Pro 15", 2.66 Ghz C2D, 4GB DDR3 / iPhone 4 16GB
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Clinically Insane
Join Date: Dec 1999
Status:
Offline
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That's perfectly normal, no need to reset anything:
Symptoms
Some Apple portable computers (PowerBook G4, iBook, MacBook Pro, MacBook, and MacBook Air) may not show the battery as 100 percent charged in Mac OS X, even when the power adapter is connected.
The battery may appear to stop charging between 93 percent and 99 percent. Note: PowerPC-based computers may stop charging between 95 and 99 percent; Intel-based computers may stop charging between 93 and 99 percent.
Resolution
This is normal. The batteries used in these computers are designed to avoid short discharge/charge cycles in order to prolong the overall life of the battery.
When setting the Mac OS X battery status menu bar icon to display charge state by percentage, you may notice that the reported charge stays between 93 or 95 percent and 99 percent.
To allow the adapter to recharge the battery to 100%, simply allow the charge to drop below 93%. The adapter will automatically recharge the battery to 100%.
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"…I contend that we are both atheists. I just believe in one fewer god than
you do. When you understand why you dismiss all the other possible gods,
you will understand why I dismiss yours." - Stephen F. Roberts
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