iPad Charging Rate with Chart

Discussion in 'iPad' started by LennyFL, Mar 18, 2012.

  1. LennyFL, Mar 18, 2012
    Last edited: Mar 18, 2012

    LennyFL macrumors member

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    Mar 10, 2012
    #1
    My granddaughter commandeered my wife’s iPad and played games yesterday afternoon and this morning. The battery died at about 11:30. When I plugged it in using the supplied charger, it was exactly noon and I didn't think much about it. I came back in the house and looked at the clock and it was exactly 12:30. I wondered how much it charged in 30 minutes so I looked. Then at 1:00 I checked again. Then my Obsessive Compulsive Disorder took over and I checked every 1/2 hour, recorded it in Excel and charted it.

    Conclusion the iPad charges at about 20% per hour for the first 4 hours reaching approximately 75%. It then takes a little less than 2 hours for the last 25%.

    The iPad was on but cover was closed so it was “inactive”. It might take longer if you were using it while it was charging. I also wonder how long it would take if you shut it down completely. Maybe next time :)

    Lenny
     

    Attached Files:

  2. Stealthipad macrumors 68040

    Stealthipad

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    Apr 30, 2010
    #2
    Thanks this is much better that what others claim, some say it "takes forever"!!!:p

    I am very happy as long as it charges while I sleep!:)
     
  3. identity macrumors 6502

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  4. Dextor143 macrumors 6502

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  5. brand macrumors 601

    brand

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    #5
    I changed it to what I think you meant.

    That is completely dependent on Wi-Fi use, Bluetooth use, screen brightness, and the App being used.
     
  6. mattpreston11 macrumors 6502a

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    Nov 9, 2007
    #6
    This.

    Mine fully charged while I was asleep and lasts the full day(with heavy usage). can't ask for more than that.
     
  7. xxBURT0Nxx macrumors 68020

    xxBURT0Nxx

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    Jul 9, 2009
    #7
    obviously this is going to depend on way more factors than just "how fast the battery depletes"

    Brightness
    WiFi
    Location Services
    LTE
    Bluetooth

    All are going to affect how fast it depletes.

    Many sites have already done battery tests (typically brightness set to 50-60% with a constant video looping over wifi) and have gotten results similar to what apple claims (10 hrs wifi, 9 LTE).
     
  8. chukronos macrumors 6502

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    Colleyville, TX
    #8
    I believe mine lasts longer than advertised. I have used it non-stop the past 5 hours. Surfing web, playing some drawing game vs my wife, and buying a couple of books. As pf right now, I still have 78% left. My screen brightness level is just above 50%.
     
  9. Stealthipad macrumors 68040

    Stealthipad

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    Apr 30, 2010
    #9
    Even though I love my new iPad I can not imagine doing 10 hours on it in a single day.
     
  10. chrisu91 macrumors regular

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    Jun 28, 2010
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    Ontario, Canada
    #10
    I fully drained my battery, plugged it in and went to sleep. Woke up 6 hours later and it was at 80%. I was using the supplied wall adapter of course.
     
  11. xxBURT0Nxx macrumors 68020

    xxBURT0Nxx

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    #11
    plane ride, car trip, commuting to/from work and using it at work, school.... plenty of long usage scenarios.
     
  12. ebolamonkey3 macrumors regular

    ebolamonkey3

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  13. Stealthipad macrumors 68040

    Stealthipad

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    Apr 30, 2010
    #13
    Knock your self out. 99% of the iPad 3 owners will be very happy with the battery life and charge rate.

    You may not. My LX570 has 110volt built in and as far as commuting, LOL, give me a break! If you look hard enough you can even find that YOU are flawed and not perfect!:eek:
     
  14. xxBURT0Nxx macrumors 68020

    xxBURT0Nxx

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    #14
    where did i say that i wanted more than 10 hours????

    I said, other sites have performed battery tests and found similar results to what apple claims (10 hrs wifi, 9 LTE)...

    So maybe instead of telling me I'm "flawed" because you don't know how to read, you should work on your own reading comprehension... :rolleyes:

    I swear.. people on here post dumber stuff by the day.
     
  15. Stealthipad macrumors 68040

    Stealthipad

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    #15
    You prove this so well.:p
     
  16. xxBURT0Nxx macrumors 68020

    xxBURT0Nxx

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    #16
    yes, because me commenting to someone asking about battery results means I think the iPad needs a bigger battery... :rolleyes:

    Good one!
     
  17. Benbikeman macrumors 6502a

    Benbikeman

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    London, England
    #17
    Ditto Matt's comment. Even on the days of heaviest usage (eg. 5am start and 11-hour flight) I've never run out of power, and it always fully charges overnight. Executive summary: battery-life is never something I have to think about.
     
  18. brand macrumors 601

    brand

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    #18
    Pot, meet Kettle.
     
  19. tekchic macrumors 65816

    tekchic

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    Phoenix, AZ
    #19
    Your OCD is awesome, nice chart! :)

    On the weekends, I use my iPad all day and just charge it every night when I go to sleep. It's always 100% the next morning. :D
     
  20. mgipe macrumors demi-god

    mgipe

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    Oct 6, 2009
    Location:
    CA
    #20
    Very useful info. Thanks, Lenny.

    Was this done with the supplied iPad charger or something different? Might be interesting to capture the same info using an iPhone charger.
     
  21. iHeartsteve macrumors 65816

    iHeartsteve

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    Feb 12, 2012
    #21
    Thanks for sharing! I'm saving this :D on average mine only drops to 50-60% so 4-5 hours is not bad at all.
     
  22. LennyFL thread starter macrumors member

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    Mar 10, 2012
    #22
    I used the charger that came with it.

    Lenny
     
  23. Capt T macrumors 6502a

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    Mar 20, 2010
    #23
    I applaud your OCD Lenny.

    Shows what some of the guys on the forum have been trying to explain, about how charging works with this kind of battery.
     
  24. asleep macrumors 68040

    asleep

    Joined:
    Sep 26, 2007
    #24
    On my second charge, iPad 3 has been charging overnight for 8+ hours and is still at only 91%... :(

    I fully discharged it for the initial recharging and it only took about 5 hours to charge. This is a problem.
     
  25. Capt T macrumors 6502a

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    Mar 20, 2010
    #25
    Did you do a hard reset of the iPad? If not try that, could just be the sensor for the battery needs to recalibrate.
     

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