Yet Another Battery Confusion

Hey all, how u guys doing?
Ok. This has been for a month already. I keep checking coconutBattery and found that
my battery capacity is about 86%, with only 160 load-cycles over a period of 7 months (or 5 months, minus the 2 months its sitting in the Apple Store before i bought it)
Is this normal? I admit that I use the battery heavily on the first 3 months before switching to power plug more often after a friend's advice. But then, the battery capacity was still above 95%
I recorded the slow battery degrading in coconutbattery, Nov 08 it was 97% and Dec 08, 92%
But i didnt expect it to jump down to 86% today. Its been playing round 86 - 88%. Never goes back to at least 90%. What's going on?
I know the rule for replacement is 80% before 300 cycles, looks like i can only hope it goes 80% before that so i can get free battery replacement or can the Apple dudes do anything if i show this to them?
Thanks for the attention and reply, hopefuly
Cheers!

The advice to run your computer more on the AC adapter could be part of the problem. Like humans, the battery can stay healthy only with exercise. This is a good read:
http://www.apple.com/batteries/notebooks.html
Especially note the link in the lower right under "AppleCare" that reads. "How to calibrate a battery for best performance."
A slow and linear decline in health is not abnormal; when it plummets from 95 percent to 65 overnight as mine did, that's abnormal. My problem turned out to be a leak. Remove your battery and examine the edges where the two case halves meet. If you see any blue-gray crud that looks like paper maché stuck to the seams, take it in. Mine was replaced under warranty.

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    Message was edited by: tdogb

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