MBP battery calibration not helping?

[drossad]

About a week ago, my battery went from a steady 96-98% capacity/health down to around 90%. So, I did my usual calibration (as I do every 1-2 months). Strangely the total capacity went down to 85%. I calibrated it two more times and it still is the same. The best capacity reading I get is 90% while it is being used on battery power only. So, it seems to fluctuate as the battery drains.

I don't think it's normal for calibration to actually make the battery capacity worse. Thoughts anybody?

I've attached a screenshot of my most current coconut battery reading.

 

[kastenbrust]

Try using iStat to give us a screen shot of your battery health rather than coconut battery, which is increidbly unreliable.

 

[drossad]

Here ya go.

 

[drossad]

Plus here is the coconut battery screenshot taken right after the iStat one.

 

[drossad]

Any words of wisdom kastenbrust?

 

[Kevlar]

Well Apple says 300 cycles the battery health should be above 80%. So at 150+ cycles you are well within that. If you drop below 80% before 300 cycles, call apple care or go to an apple store and they might replace it as defective.

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

 

[drossad]

Thanks kevlar.