does a daily USB connection harm the battery life ?

Discussion in 'iPhone' started by Tex-Twil, Sep 1, 2009.

  1. Tex-Twil macrumors 68020

    Tex-Twil

    Joined:
    May 28, 2008
    Location:
    Europe
    #1
    Hi,
    I have the iPhone quite often connected via USB to my computer thus it is being charged all the time. I also do use the phone when not connected via usb so the battery is being used.

    Can a contact charging harm the battery ?

    Thanks,
    Tex.
     
  2. -aggie- macrumors P6

    -aggie-

    Joined:
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    Location:
    Where bunnies are welcome.
    #2
  3. Tex-Twil thread starter macrumors 68020

    Tex-Twil

    Joined:
    May 28, 2008
    Location:
    Europe
    #3
  4. Small White Car macrumors G4

    Small White Car

    Joined:
    Aug 29, 2006
    Location:
    Washington DC
    #4
    That's the part you didn't understand.

    When it reaches 100% the battery stops charging and the phone ignores it and just runs off the power connection.

    So as far as the battery is concerned, being fully charged is the same as the phone being off.
     
  5. Maverick1337 macrumors 65816

    Maverick1337

    Joined:
    Nov 4, 2008
    #5
    I really hope it's not a bad thing because i literally have to charge my phone everyday because I use it so much lol.
     
  6. Tex-Twil thread starter macrumors 68020

    Tex-Twil

    Joined:
    May 28, 2008
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    Europe
    #6
    yes ok but there is a point where the iphone charges again since it stays at 100% all the time.
     
  7. MacKiddyWiddy macrumors 6502

    Joined:
    Aug 18, 2009
    #7
    yeah that will be fine but maybe once a week, run the battery completely dead (the iPhone won't turn on dead) and give it a full charge without touching it... that will keep your battery in tip top condition [​IMG]
     
  8. rorschach macrumors 68020

    rorschach

    Joined:
    Jul 27, 2003
    #8
    It's fine because it's smart enough to stop charging. But:

    http://www.apple.com/batteries/iphone.html
     
  9. John T macrumors 68020

    John T

    Joined:
    Mar 18, 2006
    Location:
    UK.
    #9
    Apple recommend complete discharge/charge no more freqently than once a month. Repeating this cycle more frequently can seriously reduce battery life.
     
  10. Tex-Twil thread starter macrumors 68020

    Tex-Twil

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    May 28, 2008
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    Europe
  11. FXT 1 macrumors 6502

    Joined:
    Jul 14, 2009
    Location:
    UK
    #11
    My iPhone 3G often glitches, with the icon in the top right corner of the screen showing a fully charged battery, yet the big battery in the middle of the screen shows around 20%.
    Using a wall charger btw, haven't seen this occur on the iMac...
     
  12. Maverickster macrumors regular

    Joined:
    Jun 27, 2009
    #12
    Actually, Apple recommends complete discharge/charge no LESS frequently than once a month. See Rorschach's post above. Not sure whether I'd do this once a week though.

    --Mav
     

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