MBP Battery not charging past 99%

Sdao

macrumors 6502
Original poster
Jul 12, 2007
336
0
Im plugged in with my screen brightness only half way, no sound, just using safari and a few widgets + wireless internet and my MBP wont charge past 99%

iStat pro is saying the battery health is at 98%, which makes sense, this laptop is less than a week old...

anybody have any suggestions as to why it wont hit 100?
 

bobcan

macrumors 6502a
Jan 8, 2007
680
5
Sunny but Cold.. Canada
99% or 100%.... is there really a Difference!!???

I am pretty sure there will be No Panic unless you are down way more than 1%!! Lets allow for a Bit of Mechanical Error Please!! Somewhat like your Speedometer in a car; or any # of Clocks/ metering Devices, etc, etc....

It may well fix itself if you do the Apple "calibration"; if not....??
 

CalBoy

macrumors 604
May 21, 2007
7,849
36
Your battery won't charge if it was below 95% when you plugged it in.

Your 98% health reading means that your battery has lost 2% of its maximum charge. This will gradually go down over time, don't worry about it. Even mine, which is four weeks old, has only 98% health.
 

KristieMac

macrumors 6502a
Jun 3, 2007
546
0
Harrisburg, PA
thank you...

that's actually pretty interesting, makes sense now that I think about it...

I think every question I've had about this new MBP has been answered with... "oh, yeah... its something apple does to ensure your laptop is staying healthy"

No problem. :)

Mine have all been answered with... "it's supposed to do that" or "it's user error". Not too much of the latter, thankfully.
 

queshy

macrumors 68040
Apr 2, 2005
3,687
3
as long as your machine is holding a good charge I wouldn't worry...
 

danerz

macrumors newbie
Jun 17, 2007
26
0
my SR MBP is only 5 days old and the battery health is 96% Should i be worried about this????
 

G-Force

macrumors 6502a
Nov 25, 2006
657
20
It won't even go to 100% after say.. an hour? My MacBook hangs on 99% for about 30 minutes before it says 100%.
 

kolax

macrumors G3
Mar 20, 2007
9,186
115
Your battery won't charge if it was below 95% when you plugged it in.

Your 98% health reading means that your battery has lost 2% of its maximum charge. This will gradually go down over time, don't worry about it. Even mine, which is four weeks old, has only 98% health.
Really? My old 2nd gen MBP always charged to 100% and I had that for half a year.
 

Sdao

macrumors 6502
Original poster
Jul 12, 2007
336
0
I shut the MBP down last night and let it charge over night, ill update this thread once I get home... but apparently it wont charge to 100 so it maintains some of its battery health
 

weckart

macrumors 601
Nov 7, 2004
4,746
1,783
Mine on my MBP SR was down to 71% after a month and somehow registered 17 charge cycles, although in reality it was more like 5 or 6 at most.

Apple replaced it (week 23 computer) and said that there had been issues with a battery manufacturer on some of the early models. My new battery is at 99% capacity and charge (5467 and 5444 mAh respectively) after charging from 2 dots to full. My Macbook still shows 100% after two months. My old iBook was showing 100% after over a year and a half and was over 100 charge cycles.