Which country is that?

Apple stated modern MacBook/ MacBook Pro with internal battery should maintain min 80% of original capacity for up to 1000 charge cycle. Anything shorter than that you should be able to file for a battery exchange. So far the worst MacBook I've seen only gets 800+ charges, and the battery still hold 86%.

http://www.apple.com/batteries/notebooks.html

There could be many caused. Overheating, chemical errotion or failing. Just like aging AA battery that will leak. Li-poly battery will expand. Chemical reaction inside the cell produce gas. If not handled properly, combustion might happen. It is good to have healthy charging practice. But being paranoid on charge cycle numbers is just too much.

Where did you check the "98%" reading?

well that's 2% drop for 6 cycle. Maybe you should monitor it closely. Have you done a calibration?

If you are not happy with it, you should call AppleCare on office hour and make a case, see if they can offer you an exchange.

This post has been edited by wei: Jun 12 2011, 01:45 PM

@mkaz You have to tell us more. Which model is your Mac? How old is it?

@insane.gamer, I hope you read the replies above. Tried calibrating the battery?

Okay, have you install the app mentioned like iStat Pro or Coconut Battery? What is the reading you get for Charge Cycle & Remaining Capacity?

Battery life highly depend on what you running on it.

For example:
Running 3-4 bar screen brightness and nothing connected over USB/FireWire. Only doing word processing is definitely will run longer than have full brightness, WiFi on, Bluetooth on, playing music, watching youtube with external hard drive connected.

Very good info there. I suggest anyone concerned about battery go study it. Everything you need to know is there in 1 page.

If you think your battery is not performing as it should, send to service center, get it replaced. Posting here won't cure the degrading battery.

@BRY7 your 1 single case represent many cases???
Study the topics and you will find insane.gamer is having a quite recent MBP where he/she is reporting drastic battery life drop since purchase.

@insane.gamer Do not send to Machines. Send to proper service center. Like VR Tech or QCD, the process might take you around 10 working days. But if you call AppleCare, and get them agree to look into your case prior walking into service center will cut things short a bit. Tell them you've been monitoring the battery life and it's dropping day to day.

In most cases I find talking to AppleCare team will get a better repair feedback. They will approve for parts faster then waiting for local service center to process.

They way you talk to them will also determine the outcome. Be as specific and informative as you could.

This post has been edited by wei: Jul 11 2011, 01:34 AM

Since you sent it in, just wait la. Nothing much can do unless you want to cancel repair and send to other place.

just talk normally, describe to them the problem and what you facing. Tell them you need the Mac to work and ask them if can speed up the process.