What is the normal MBP Battery capacity?

I have an approx. 1 month old MBP; the first battery was just replaced by Apple. I received the new battery on Friday and let it charge fully. On Friday evening, I turned on the MBP and saw that the battery showed "original capacity 5500, current capacity 5391 (fully charged)". I thought that a bit strange, so I decided to calibrate it following Apple's instructions. On Saturday, after fully charging it again, it showed "current capacity 5301". So, now the capacity is worse - ?
Before calling Apple, I'd like to know if it's normal to have a 5% capacity reduction within about 24 hours - at that rate, the battery will be dead shortly.
I'd appreciate any input/experiences with battery capacity.

FIGURED IT OUT! My battery level reached 95% and the battery status said, "the battery is not charging"
I looked it up on apple support and found this very useful section in the Macbook Pro User's Guide:
"If the battery icon in the Finder menu bar is set to show the percentage of charge, you might sometimes notice that the battery does not attain a full 100 percent charge when the power adapter is attached. This is normal behavior; battery life is maximized if charging is not continuously cycled on and off when the battery’s charge capacity is between 95 and 100 percent. When the battery level eventually drops below 95 percent, it will charge all the way to 100 percent."
This fits with my problem. This macbook pro has been literally plugged in for well over a week!
So much for the "apple products are losing their quality"

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Anyone else seeing their battery capacity drop off?
I got my 13" MBP back in Mid June, and since then my battery capacity has declined to 95% (max capacity is now 5201mAh) with 49 cycles. I have calibrated it a couple of times new but it hasn't helped in any noticeable way.
The MBP does tend to live plugged in over night (and on) collecting tweets but then I used to do that with my old white MacBook without causing any problems to the battery.
At this rate of drop off I would be surprised if the battery readed its 1000 charge cycles at 80%

That's normal. The decline in battery capacity is not linear.

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Hi,
I'm trying to find out the range of battery capacity for a 7 month MBP. The original battery capacity was 4600 mAh and now it only has 4439 mAh left. Is this normal?
I do calibrate my battery every 2 weeks and I tried resetting the SMC.
Any input would be appreciated!

The figures look fine, PaRaDa, but that is a pretty low cycle count for 7 months usage. Do you run it on the mains most of the time or is it just not heavily used?
These batteries tend to last best if you vary the usage pattern a bit, running off the battery for a while every day or two, etc., without necessarily taking it all the way down to flat.
see http://www.apple.com/batteries/notebooks.html for some useful advice on maximising your battery's life.
Recalibrating every few weeks is a good idea if your MBP is generally hooked up to the charger, or if you don't use it a great deal, but every fortnight is probably overkill.
I'd be aiming for a bit less frequent full recalibration, and maybe a bit more general use "off the charger", to get the best out of it.
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MBP Battery capacity ?

Hi..
I bought MBP 15" on December in Thailand. Everything was fine and on June I found out the full charged Battery capacity was reducing from 5500mAh to 5320mAh. Every time I charged the battery the capacity seemed going down. I went to talk with apple center and a week later they replaced me a new battery which has 5520mAh(brand new battery). So, it's May 1st and it has only 12 charge cycles and now max battery capacity shows "5233mAh". Damnn second time and I went to the store again and they said... wait until it drops to 80% and they will replace it for me and yes by looking me with weird eyes. They said all the MBP batteries are always like this. What is this? Can't I have the right to replace with this god **** failure?
http://discussions.apple.com/thread.jspa?threadID=935410&tstart=0
Take a look at this link. This guy's battery capacity I've never seen this good condition before. >>>5813mAh 9months<<<
Calibration? Reset? My battery doesn't seems to appreciate those.
any suggestion please? so... should I have to wait till it drops to 80%? This ain't right. What should I do?
Help
Thank you<br>
Mac Book pro 15" Mac OS X (10.4.8) Core 2 duo 2.16GHz Ram-2GB
Message was edited by: MBP VS VAIO SZ

" Lithium-Polymer batteries will lose capacity with each charge cycle. After about 500 charge cycles (on average) the battery will need to be replaced. "
hmm.. I do understand now that Lithium-polymer batteries will lose capacity with each charge cycle like you said. But can you try to think again that my battery charge cycle has only 12 times and it dropped to 5233mAh from 5520mAh (2months). Isn't it too fast? so.. technically when I reach another 12 times and all together 24charge cycles my battery capacity would be around 4800+ mAh?
http://discussions.apple.com/thread.jspa?threadID=935410&tstart=0
I do understand this guy because his battery has 123 charge cycles + nine months
why I'm so sure of this because I do notice that every time I charge my MBP... the battery drops like 30mAh each cycle.
Thank you
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