MBP: Better to Charge it Or Let Battery Drain During Normal Usage?

Discussion in 'MacBook Pro' started by rekhyt, Aug 20, 2010.

  1. rekhyt macrumors 65816

    Jun 20, 2008
    Part of the old MR guard.
    Is it better, during normal usage, for example at home, where you could either charge your MacBook Pro or let the battery drain until it is used up (5%, ...).

    Some people say that letting the battery cycle is the best option, yet other people, including my friend who had lost many many cycles even though he had attempted precautions (Dim screen brightness until one block remained, wireless off, bluetooth off) had said that having your laptop plugged in as muchas possible is the best option, as there would be no cycle change.

    What is the best option?
  2. Tonsko macrumors 6502


    Aug 19, 2010
    This website is an ideal resource:


    It's pretty long and involved. It depends on your type of battery. I suspect the battery in a MBP will be Lithium-Ion or Lithium-Polymer:


    ...and for the really lazy, a quick summary:

    Having said that, that's only one site, but it does seem to be grounded in research at least, rather than just passing on experiences. It's advice I've always followed.

    HTH :)
  3. fcortese macrumors demi-god


    Apr 3, 2010
    Big Sky country
    I had to have my battery replaced last year because it wasn't holding a charge. I was told that it needs to be periodically drained completely and then recharged. I know have a monthly reminder through iCal to do a battery drain/recharge go to the apple web site and type in batteries and you can get this info and set up your iCal reminder to boot.
  4. GGJstudios macrumors Westmere


    May 16, 2008

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