i4 - Average overnight battery loss?

Discussion in 'iPhone' started by lshirase, Aug 12, 2010.

  1. lshirase macrumors regular

    Jan 7, 2008
    Hey everyone,

    Just checking in to see what numbers other people are getting here...

    Usage: 39 minutes
    Standby: 7 hours 36 minutes

    email fetches hourly (2 email accounts)

    100% -----> 96%

    is a 4% loss per night normal? Im assuming that my hourly email check is the main cause here.
  2. Jnardis macrumors 6502a

    Jun 2, 2010
    6 to 8% and that with nothing on. No 3G,wiFi etc. Just 30 min fetch email.
  3. flash3d macrumors newbie

    Jun 21, 2010
    Of course its normal!

    "Im assuming that my hourly email check is the main cause here."

    so you are saying if you didn't check your email once an hour it wouldn't go down at all.

    Have you ever owned a mobile phone before? your Battery would decrease even if your phone was off.

    Good god - iP4 Batter OCD - turn the % indicator off!
  4. SooneratND macrumors regular

    Jun 27, 2009
    I wouldn't know. Night time is when my iPhone charges.
  5. Small White Car macrumors G4

    Small White Car

    Aug 29, 2006
    Washington DC
    That would be over 2 days of stand-by time. I'd say that's pretty good!

    That being said, I don't understand why you wouldn't charge your phone at night. My battery is usually pretty low at the end of the day. My sleep-time is the perfect time for the phone to charge.
  6. lshirase thread starter macrumors regular

    Jan 7, 2008
    I'm saying that if my email didn't automatically push every hour i would lose maybe 1% at the most. I don't have a problem with it, i just wanted to compare numbers. Take it easy, champ.
  7. Jnardis macrumors 6502a

    Jun 2, 2010
    Every Apple rep I spoke to said not to leave the phone charging over night. Said it will decrease the life of the battery. I'm not sure how true this is, but just letting you know so please dont jump on my comment.
  8. dagored macrumors 65816

    Sep 18, 2007
    I close everything out and I lose about 1 - 2%. I thought that was great.

    Only charge the phone every other night.
  9. Knowimagination macrumors 68000


    Apr 6, 2010
    There is nothing wrong with charging a battery overnight. If apple really thought that you shouldn't, you would find it on there battery support documents.
  10. nataliamck macrumors 6502

    Jun 22, 2010
    Lisburn, Northern Ireland
    Before 4.0.1 I never lost any battery overnight. Maybe 1% but very rarely.

    Now I lose 4-6% every night and that's with no wifi, no bluetooth, no 3G, no push email....

    I miss 4.0 :(
  11. Small White Car macrumors G4

    Small White Car

    Aug 29, 2006
    Washington DC
    I've always heard that it stops charging when it's full. If that's the case then there's no reason to not charge overnight.

    I can't find proof of that online right now, but I also can't find proof of what you were told. The biggest thing in my favor is that this page doesn't say anything about not charging it over night. If those people were right I'd have to assume it'd be mentioned on Apple's own site.

    Since they don't mention it then I have to think that those employees didn't know what they were talking about.
  12. sMiK macrumors regular


    May 8, 2008
    Liverpool, UK
    I always charged my iPhones overnight and batteries were always fine :apple:
  13. Jnardis macrumors 6502a

    Jun 2, 2010
    I agree with you guys. Everyone I asked always said not to charge over night and not to use a car charger. Who the hell knows. I charge over night if I need to...
  14. mdwsta4 macrumors 65816

    Jul 23, 2007
    4% or so sounds about normal. after I jailbroke, my battery would drop as much as 13-17%. Thankfully there was an update to ultrasn0w and it's back to normal. last night my battery dropped only 2%.
  15. Katanae macrumors member

    Jun 28, 2010
    2-6%, Jailbroken, Push eMail, Push, WiFi and 3G on.
  16. Pracht macrumors member

    Jul 22, 2010
    How do you accomplish this?

    That was my routine with my iPhone 2g (with normal daily use I could make it to midnight with about 60%ish percent)

    Now with my i4 it's usually around 30% by midnight, and I dont really think I'm usuing my phone more then my previous one.
  17. CanucksRock macrumors member

    Jul 17, 2010
    If they didn't want you to charge overnight - why are there so many alarm clocks with docking stations???

    I happen to own one - and my iPhone goes into every night.
  18. hockey9999 macrumors member

    Mar 11, 2010
    It also has a lot to do with your signal quality.

    If you are in a poor coverage area, your phone will use more battery then one using identical settings in an area with excellent coverage.
  19. dagored macrumors 65816

    Sep 18, 2007
    Don't know, my first iphone. My wife's is the same. Maybe we got lucky. Not one problem with either phone and boy is she racking up the minutes.
  20. iggypod macrumors 6502a


    Jun 23, 2010
  21. noobinator macrumors 603


    Jun 19, 2009
    Pasadena, CA
    I have wifi, 3g and an alarm on and i lose 2-3%
  22. SooneratND macrumors regular

    Jun 27, 2009
    First, they are wrong. The phone knows when the battery is full and stops charging.

    Apple says the battery is good for 400 full "charge cycles" before it begins to degrade... that's full discharge and recharge. Considering I put it back on the charger with about 40-50% charge left at night, I get about two days per "charge cycle," by Apple's definition. That's 800 days, or 2.2 years before the battery starts to drop off at all (and even then, its not an overnight drop, just a slow decay in performance) I upgrade every two years, so what do I care if the battery is trashed for the next person that buys the phone?
  23. TroyBoy30 macrumors 68020


    Jun 9, 2009
    Atlanta GA
    0! mine gets cut off over night! :D

    during the day I lose 1% ever 6 - 7 hours on standby. no push or fetch
  24. Jare macrumors 65816


    Jun 17, 2010
  25. sarcosis macrumors 6502a

    Apr 25, 2006
    These United States
    I loose around 5% with 3G/Edge (depends on the signal at my house, it keeps changing since I live in the middle of too many trees). No WiFi.

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