Should I run the battery down to 0 the first time?

Discussion in 'iPad' started by jayhay, Apr 11, 2010.

  1. jayhay macrumors member

    Joined:
    Apr 7, 2010
    #1
    Just wondering if running the battery down to zero the first time before charging actually enhances battery life or if this is just a rumor?
     
  2. troop231 macrumors 603

    Joined:
    Jan 20, 2010
    #2
    Yes, you should, it will create a fresh first charge cycle in the battery.
     
  3. ClaireL macrumors 6502a

    ClaireL

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    Apr 4, 2010
    Location:
    New Jersey
    #3
    Hmm, I have had my iPad since Launch and never ran it down to zero, but I will tonight.
     
  4. r0k macrumors 68040

    r0k

    Joined:
    Mar 3, 2008
    Location:
    Detroit
    #4
    No no no. Do not run all the way down. Lithium ion batteries do not like to be run down all the way. It's not as bad as lead acid but not a good way to treat your iPad. Running all the way down was necessary back in the day of ni cad and you needed to reset the battery charge memory. I wouldn't bother with any special charge rituals. Just charge when you can and use your iPad as much as you like but don't waste time running down to zero on purpose. You are stressing the batteries needlessly.
     
  5. California King macrumors 65816

    Joined:
    Sep 20, 2007
    #5
    Really? Doesn't Macbooks use Lithium ion batteries as well? If so, Apple actually recommend you do run it down every 2 months or so.
     
  6. ttate90303 macrumors regular

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    Nov 22, 2008
    #6
  7. troop231 macrumors 603

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    Jan 20, 2010
    #7
    If you want to be exact, it's a lithium-ion polymer battery in the iPad = LiPo which are different in chemistry to just a LiIon. Run the battery down to where it prompts you to plug it in, then once it's fully charged unplug it.
     
  8. PNutts macrumors 601

    PNutts

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    Jul 24, 2008
    Location:
    Pacific Northwest, US
    #8
    Good information, but they don't mentioning a full discharge cycle (unless I missed it). They do talk about it for reporting purposes, but not to excercise the battery:

    For proper reporting of the battery’s state of charge, be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down).
     
  9. barefeats macrumors 65816

    barefeats

    Joined:
    Jul 6, 2000
    #9
    Here is Apple's advice on iPad battery care:

    http://www.apple.com/batteries/ipad.html

    Running it to zero calibrates proper reporting of the battery’s state of charge. The verbiage seems to imply that it has a finite number of charge cycles. If that is the case, we should let it run to zero every time.

    Can anyone cite a tech bulletin that confirms that?
     
  10. master-ceo macrumors 65816

    master-ceo

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    The SUN
    #10
    one of the reasons my 1st gen iPhone is still kicking.
     
  11. AJsAWiz macrumors 68030

    AJsAWiz

    Joined:
    Jun 28, 2007
    Location:
    Ohio
    #11
    The doc in the link you provided states that you should do the full cycle (running it from 100% to zero then charge) at least once a month not every time.
     
  12. ClaireL macrumors 6502a

    ClaireL

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    Apr 4, 2010
    Location:
    New Jersey
    #12
    Thanks for clarifying that. :)
     
  13. AJsAWiz macrumors 68030

    AJsAWiz

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    Jun 28, 2007
    Location:
    Ohio
    #13
    I just followed the link the poster provided and read the whole article.

    You're welcome :D
     
  14. flight macrumors regular

    Joined:
    Mar 4, 2010
    #14
    Just to add to AJsAWiz's response; running it to 50% and then plugging it in does not count as a full cycle. So don't worry if you plug it in at 90% level - you didn't "waste" a cycle doing so.
     
  15. schulzmc macrumors regular

    Joined:
    Aug 13, 2006
    #15
    That's right - one full cycle equals 100%. So running it to 90% and recharging 10 times = 1 charge cycle.
     
  16. byulasfjazz macrumors regular

    byulasfjazz

    Joined:
    Jul 5, 2009
    #16
    ipad charge

    Has anyone noticed the battery life is amazing...

    Im so used to not having my iphone last all day.

    BUT i have noticed my iphone charges in like 30 min
    and the IPAD ....

    after 30 min its charged like 15 percent... very slow charge...

    but freaking lasts me forever.
     

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