Handy MacBookPro Battery draining
Posted 2009-05-20 20:18:23 by .

Related tags: macbook battery power-cycle cycle python

I recently got a new MacBook Pro laptop battery. I plan to use it only when travelling and leave the current one inside normally. It has just about enough power to allow me to switch batteries if I need too, and there is no power outlet available.

To condition the new battery I wanted to power-cycle it a few times. A good method for doing this turned out to be:

  • Unplug power lead.
  • Under "Energy Settings" set Optimatzation to "Better Performace".
  • Open Terminal.app, create a few tabs (5+)
  • In each tab paste the following command python -c "while True: pass"

 

This sets the python interpreter running hogging maximum CPU on both processors. After and hour of this the battery needed recharging. The old battery did not last more then 5 minutes under this exercise.

 

Comments

On 2010-08-15 19:24:49 aaron () wrote:
perfect - i needed to recalibrate my battery, but waiting for it to drain, rest for 5 hours, and then plug it back it was never a "convenient" option. thanks.

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