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421 Views 6 Replies Latest reply: Jul 5, 2012 9:04 AM by keg55 RSS
jjmcespedes Calculating status...
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Jul 5, 2012 5:24 AM

How much should i let this battery discharge before charging?  I.e. percentage. 





MacBook Pro
  • CT Level 6 Level 6 (14,955 points)
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    Jul 5, 2012 5:30 AM (in response to jjmcespedes)

    No particular number. But complete discharge is not the way to go.


    Apple - Batteries - Notebooks



  • Shootist007 Level 6 Level 6 (16,640 points)
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    Jul 5, 2012 5:31 AM (in response to jjmcespedes)

    This question is asked, in many different ways, on almost a daily basis. Please do a search or look to your right, "More Like This".


    Never let it go below 20-10%. You can recharge after it drops to 90-92%. Leave it connected to AC when available. Only use it on battery when AC is not available or not easily available. Use in on battery once or twice a week when you noramlly have it connect to AC most of the time.

  • CT Level 6 Level 6 (14,955 points)
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    Jul 5, 2012 8:04 AM (in response to jjmcespedes)

    You are welcome.

  • cybercrypt13 Level 1 Level 1 (25 points)
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    Jul 5, 2012 8:19 AM (in response to Shootist007)

    I'm curious, I just read an article about these batteries (don't remember where) that went into detail about the battery and they recommended at least once every couple months to run the battery bone dry and then recharge it again in order to keep the electronics in the battery clear on exactly how much charge was really available.  You seem to be recommending something totally different and in fact suggest "NEVER" to let it go below 10% charge which seems strange.


    Where did you get this information that I can read up on it more?





  • keg55 Level 5 Level 5 (5,585 points)
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    Jul 5, 2012 9:04 AM (in response to cybercrypt13)

    You might be referring to this article from Apple regarding recalibration of notebook batteries. Read the section in the article Portables with built-in batteries. It mentions pre-calibrated batteries in the models listed and don't require the recalibration procedure. Older models used the recalibration procedure.


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