Battery doesn't recharge when 95% or above

Hello everyone,
I recently got a new MacBook Air 1.6Ghz standard configuration. I noticed that if I unplug the AC adapter when the battery is fully charged and replug the notebook when the battery is say 95% I get a green light and the menu bar says the battery is fully charged although the percentage is 95%.
The battery only starts recharging when it is anywhere below 95%. I am wondering if anyone else has encountered this problem? or is this normal cause this is my first mac?
Thanks

Since you're new to Macs, here is some helpful info, if you are concerned about the battery.
Go to Finder>Go Menu>Utilities>System Profiler. Click on Power, and it should show you the state of the battery, among other things. The battery should retain 80% capacity after 300 charge cycles, or for at least one year. If the percentage drops below 80% in that time, and it is still under warranty (please, do yourself a favor, and buy AppleCare, if you haven't already!) Apple will replace it at no charge.
Hope this helps.

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