Can overcharging hurt the battery??

Discussion in 'iPad' started by ShaunAFC3, Mar 22, 2016.

  1. ShaunAFC3, Mar 22, 2016
    Last edited: Mar 22, 2016

    ShaunAFC3 macrumors regular

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    Feb 28, 2016
    #1
    I have Ann iPad Air 2 and I have this app called Battery Doctor that monitors your battery and while it charging the battery to avoid overcharging all that stuff and the Battery Doctor is a pretty well known and reliable app! :)

    Well in the last couple weeks I have left the iPad charging for over 9 hours on accident a couple times(about 4 times in total so far) because it was overnight and I was sleeping and after it always says on the battery doctor app it says "Limit charging time to 9 hours per time because if you charge for over 9 hours it may hurt your battery" something like that.

    So I am wondering can overcharging hurt the battery?? Or Is it just Battery Doctor app saying it??
    And does anybody leave there iPad charging for over 9 hours and has it affected the battery life??


    I am a bit worried now that I have reduced the battery life or damaged the battery in some way.... :( :(
     
  2. ZombiePete macrumors 68020

    ZombiePete

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    #3
    You cannot overcharge your battery; it has built-in protections to ensure that charging is stopped once it reaches close to its pre-determined capacity and then allows it to discharge some before resuming charging. You could leave it plugged in for days and it will not hurt the battery at all. IIRC Apple recommends allowing the battery to go through a complete discharge/charge cycle once a month, but that doesn't have to be all at once and it's better not to completely discharge your battery though, again, it won't really hurt it unless you leave it unplugged and dead for days/weeks.

    TL;DR: Your iPad will protect your battery for you, so you don't need to worry about it.
     
  3. Gav2k macrumors G3

    Gav2k

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    #4
    I hope you didn't pay for that app because it is a misleading pos.

    Your device like all iOS devices has a built in charge circuit that monitors the battery, charge rate, discharge rate just to list a few. It will not allow the charge rate or capacity to be exceeded. Added to that it will not charge the battery one 100% is reached it'll stop then allow the battery to discharge slightly before topping up again.
     
  4. ShaunAFC3 thread starter macrumors regular

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    #5

    Ok please tell me why am I keep getting this weird thing the battery drops by 2% for some reason every now and again while in use and on stand by?? Keep in mind after it drops by 2% it stays on that number % for a bit longer then usual.

    And this has been happening ever since I got my iPad Air 2 over a month ago. :(
     
  5. ZombiePete macrumors 68020

    ZombiePete

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    #6
    Battery percentage dropping when it's not plugged in is normal; the rate at which it does so is wholly dependent on what you're doing at the time. If it seems like the percentage indicator is acting erratically, you could try discharging and recharging your iPad to see if it "recalibrates" the battery meter; I've always been dubious about this practice but lots of folks believe that it works so it's worth a try and won't hurt anything.

    Honestly, though, unless you're having issues with your battery dying on you a lot I would just turn off the percentage indicator on your battery and stop worrying about it. I don't keep the percentage meter on any of my devices because then I start to obsess over it, and I suspect that is largely your problem as well.
     
  6. Melrose Suspended

    Melrose

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    Dec 12, 2007
    #7
    It depends on the charger you use, from what I read. As long as you use an Apple charger, you won't damage it.

    The damage can happen with third-party chargers. At least that's what I read.
     
  7. ShaunAFC3 thread starter macrumors regular

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    Feb 28, 2016
    #8
    So how do I do that then?? Explain to me on what to do to recalibrate the battery please if you don't mind?? :)
    --- Post Merged, Mar 22, 2016 ---
    Sorry but what do you mean when you say "erratically"? I don't understand what you mean..m :l :l
     
  8. ZombiePete macrumors 68020

    ZombiePete

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    #9
    Just let your iPad run on battery until it dies, then plug it in and let it charge back to 100%. That may help with the percentage not dropping at a more steady pace, although what you described doesn't seem all that alarming to me.

    You said that your battery percentage was dropping by 2% at different times; that's all I was referring to.
     
  9. ShaunAFC3 thread starter macrumors regular

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    Feb 28, 2016
    #10
    Ok thanks but while charging from dead 0% to 100% fully charged does it matter if the iPad is on or not while it is charging??
     
  10. ZombiePete macrumors 68020

    ZombiePete

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    #11
    Leave it alone while it's charging.
     
  11. ShaunAFC3 thread starter macrumors regular

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    Feb 28, 2016
    #12
    But does it matter if the iPad is on or not(shut down) while charging from dead(0%) to fully charged(100%)??

    I am not asking if it the iPad should be left alone or not while it is charging!!
     
  12. ZombiePete macrumors 68020

    ZombiePete

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    #13
    It will shut itself off when the battery dies, so when that happens just plug it in and leave it alone. Don't turn it on, but don't mess with it to turn it off it it comes on by itself.

    You're being kind of rude for someone demanding step-by-step instructions to resolve a problem that may not even really be a big deal in the first place. I'm trying to patiently help you, but if you're going to respond like this feel free to Google the information for yourself to get the answers you want.
     
  13. h9826790 macrumors 604

    h9826790

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    #14
    Over charge, YES. However, you can't over charge it if you use the correct charger and cable.
     
  14. joeblow7777 macrumors 601

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    Sep 7, 2010
    #15
    It's not even about the charger and cable. Unless it is defective, the device itself will stop drawing a charge when it no longer needs one. If your device is functioning correctly, it is not possible to over charge it.
     
  15. h9826790 macrumors 604

    h9826790

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    #16
    Agree, wrong charger / cable may cause damage by something like short circuit, but not over charge.
     
  16. Newtons Apple macrumors P6

    Newtons Apple

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    #17
    NO!

    Has nothing to do with the cable or charger.
     
  17. Melrose, Mar 22, 2016
    Last edited: Mar 22, 2016

    Melrose Suspended

    Melrose

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    #18
    ***EDIT Re-read the OP, and edited my post to avoid sounding like a stupid idiotic moron.***

    It's possible to damage your device using a bad charger; the OS controls the battery charge and cuts it off when it's done.
     

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