Skip navigation

long-life batteries usage (both for iPhone and MAC book PRO)

249 Views 6 Replies Latest reply: Oct 30, 2013 7:37 AM by windmauri RSS
windmauri Calculating status...
Currently Being Moderated
Oct 30, 2013 5:36 AM

what is the correct charging methodology to achieve the best long-life batteries usage? (both for iPhone and MAC book PRO)

MacBook Pro (Retina, 13-inch, Late 2013)
  • Barry Hemphill Level 7 Level 7 (33,095 points)

    Please amplify your question.  As far as I know, there is no "correct charging methodology."



    MacBook Pro, OS X Mountain Lion (10.8.5), 8 GB memory
  • Barry Hemphill Level 7 Level 7 (33,095 points)

    As far as I know, any of the above will be OK.


    I usually plug in and charge overnight.  As far as I know, there is no risk to leaving a fully charged device plugged in.


    I do not think that letting a device completely discharged or plugging it in whenever you want makes any difference. 


    The batteries are li-on, so there is no memory I understand it.



    MacBook Pro, OS X Mountain Lion (10.8.5), 8 GB memory
  • PlotinusVeritas Level 6 Level 6 (13,630 points)

    As per the macbook Pro:


    Keep it plugged in when near a socket so you keep the charging cycles DOWN on your LiPo (lithium polymer) cells / battery.


    *Contrary to some myths out there, there is protection circuitry in your macbook and therefore you cannot 'overcharge' it when plugged in and already fully charged

    If you leave your macbook plugged in all the time, take it off charge and drain the battery down to 15 or 20% every couple of weeks or so.


    LiPo (lithium polymer, same as in your macbook) batteries do not need conditioning. However...


    LiPo batteries do NOT like to be dropped down to 15% or so often,....key word being "often"


    A lot of battery experts call the use of LiPo cells the "80% Rule" ....meaning use 80% of the charge or so,.. then recharge them for longer overall life.


    Never let your Macbook die from power, you can corrupt files that way, and the batteries do not like it.

    **Also new evidence suggests that sudden loss of power can adversely affect data on a SSD (solid state drive).....again, dont let it ever shut down from total power loss





    The only quantified abuse seen to LiPo cells is instances when  often the cells are repeatedly drained very low.


    Contrary to what some might say, LIPo batteries have an "ideal" break in period. First ten cycles or so, don't discharge down past 40% of the battery's capacity.


    Same way you dont take a new car out and speed and rev the engine hard first 100 or so miles.




    *Also, if youre going to store your macbook away for a few weeks or more,... make sure it has at least a 50% or so charge.


    *Cycle count / use/ lifespan is one thing that cant be countered.




    Proper treatment is another thing. Just because LiPo batteries dont need conditioning in general,.. does NOT mean they dont have an ideal use / recharge environment. Anything can be abused even if it doesnt need conditioning.


    Just use and enjoy your new macbook, 


    From Apple on batteries:



    but really all you would keep in mind is --"consider 20% is the same as 0% and recharge it"


    and best "tip" is if its near a socket, .....plug it in as long as you can (especially at home) since cycle count on the battery are the "miles that wear out the tires (battery)"


More Like This

  • Retrieving data ...

Bookmarked By (0)


  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.