Should I calibrate my MBA 2011 / MBP mid 2010 battery?

hello.

i've started calibration process had done in macbook pros. time, however, checked apple website first , there saw notebook not need calibration...

every 2009 , later models wouldnt need cause had been done factory.

have mpa applies well.

is correct? no need calibration anymore?

if attempt procedure, notice difference?

 

anyone?!

 

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