Can't calibrate because battery never fully charges

I want to calibrate the battery in my new MacBook.
According to Apple's instructions, the battery must first be fully charged before you let it drain down for the calibration.
Problem is, I can never get my battery fully charged. The battery indicator in the menu bar shows it getting up to 99 percent charged, but never 100 percent.
Any suggestions?

Try to charge it when the MacBook is off.
Charge until the magsafe adapter turn green and all 5 led lit green, then turn on your MacBook and start the calibration.
Hope this help

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