How much battery % should I be losing overnight?

Discussion in 'iPhone' started by heyitsfez, Dec 27, 2012.

  1. macrumors member

    Sep 24, 2012
    Hey guys, I just recently got the unlocked iPhone 5, 32 GB on AT&T gophone prepaid. With the recent posts about battery life I decided to test my own by leaving it on standby overnight. I know the standby time is 200 jrs, I decided to test that myself.

    I checked and got 95% battery at 11:45 pm

    This is with wi-fi on, celular on (it's not LTE, since I'm on prepaid, I get "4G" which really gets me ~3G speeds)

    At 8:10 am I had 91% battery

    So in around 7 hrs and 25 mins I lost 4% of battery. Is this considered any good?

    Thanks in advance!
  2. TG1
    macrumors 6502a


    Feb 21, 2011
    I usually lose 2-3% overnight with my i5 so I think you're pretty normal.
  3. thread starter macrumors member

    Sep 24, 2012
    Well I never run the mail app, I usually just check it on Safari. If it matters, I had Facebook, notes, settings, itunes, music, camera, ifunny, and lose it on my multitasking bar. I left Safari with 6 tabs open, and I did not get any notifications at all overnight.
  4. macrumors 6502a

    Dec 18, 2012
    Worth pointing out that it was 8 hrs and 25 mins.
  5. macrumors regular

    Jul 17, 2011
  6. macrumors 68030

    Oct 21, 2012
    iPhone 5 has a stated standby life of Up to 225 hours. Which means you should be losing, on average, 1% every 2.25 hours (less if you have emails, etc checking in the background).

    You lost 4% over 8 and a half hours (give or take) - 8.5/2.25 = ~3.8 - so it'd be bang on spec to lose 4% :)
  7. macrumors regular

    Dec 6, 2012
    Orchard Park, NY
    It's normal.

    I usually lose about 2-5% on Wifi standby during the average of 8 hours overnight.
  8. thread starter macrumors member

    Sep 24, 2012
    Thanks for clarifying that for me :). I'm surprised the standby time was more than I expected
  9. macrumors 68030

    Sep 21, 2011
    8 hrs 25 mins = 505 minutes
    95 % - 91 % = 4 % = 0,04
    505/0,04 = 12 625 minutes, or 210 hours, or almost nine days.

    In other words, pretty much on par with what Apple says regarding standby.

    Hmm, I'll try reading the thread before answering next time ;)
  10. macrumors regular

    Oct 24, 2012
  11. macrumors 6502a


    Jan 10, 2012
    I'd say it depends on your cellular reception. At my parent's house with 1-2 bars my battery drops noticeably faster on standby vs my work where I'm within a block of a tower.
  12. macrumors 68030


    Dec 2, 2012
    Victorville CA
    If I go to bed at 100%, then it's 100% when I get up.

    On a 4s with cellular on.
  13. macrumors member

    Sep 24, 2012
    last few days ive not lost any over night (12-9)

    tho when i start to use it drop 2-3% very quickly
  14. macrumors 68030


    Apr 30, 2012
    about the same here. my ipad, ipod or an iphone not currently active on a cell network will only lose maybe 1-2% over 24 hours depending if theres anything active like emails and facebook. i had an old iphone 4 on wifi and freshly restored (no email no cell network) and it stayed at 100% for 3 days just laying on a dresser.
  15. macrumors G4

    Nov 7, 2007
    New Sanfrakota
    None, because you should be charging your iPhone overnight.
  16. macrumors regular

    Oct 25, 2009
    I barely lose any battery power on my 4s overnight, maybe 2-3% at most.
  17. macrumors regular

    Jun 8, 2010
  18. macrumors 6502

    Jan 4, 2011
    I hated the iphone 4 battery. just got iphone 5 and hoping that its better.
  19. macrumors 65816

    Apr 15, 2010
    Nottingham, England
    This is really good % decrease.

    Me with wifi/3g/data on in do not disturb getting approx 2-3 emails + a text will drop me 2% an hour.

    I'm currently in testing phase to see whether it's just something I've set causing it. I typically will get 24-30 hours standby (maybe more) with 5-7hours usage (no music).
  20. macrumors 6502


    Nov 3, 2012
    Over night with no notifications I wake up with 100 %
  21. macrumors 6502

    Jul 10, 2010
  22. macrumors 65816

    Apr 15, 2010
    Nottingham, England
    Last night turned off cell data (left on wifi) and got a few emails and it dropped 4% in just under 8 hours.

    Compare this to when I leave data and wifi on it drops about 10/11% over the same time.

    Strange as I live next to a cell tower with full bars all the time so the extra leaving data on drop doesn't make much sense?
  23. macrumors 65816


    Jan 24, 2012
    Id say I lose around 5-8% but where my phone is at night it is constantly 1 bar to no service so thats why.
  24. macrumors 68020


    Dec 5, 2009
    This is my thought as well. If you just plug it in every night, then it should last throughout the day every day (unless you're one of those people that uses their iPhone A LOT during the day).

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