Battery life prediction

Discussion in 'iPhone' started by kdarling, Jun 21, 2007.

  1. kdarling macrumors demi-god

    kdarling

    Joined:
    Jun 9, 2007
    Location:
    First university coding class = 46 years ago
    #1
    Ah, you guys do realize that every phone will need to FIRST be charged fully overnight, right?

    No fair playing with it beforehand.

    So I predict that all iPhones sold to normal consumers will end up with a ten minute battery life... because no one will be able to resist playing with it before it's charged.

    (tongue firmly in cheek)

    Kev

    PS. Okay, before you cry, you might be able to use it in the cradle.
     
  2. cyclone84 macrumors regular

    Joined:
    Jul 19, 2006
    #2
    haha, I'm sure we'll find a way to play. How could you not?
     
  3. /dev/toaster macrumors 68020

    /dev/toaster

    Joined:
    Feb 23, 2006
    Location:
    San Francisco, CA
    #3
    I am willing to bet you will be able to use it while its plugged in. iirc, it uses a standard 30pin iPod connector.

    Sucks being tethered for the first day, but I can deal.
     
  4. AirmanPika macrumors 6502

    AirmanPika

    Joined:
    Jun 19, 2007
    Location:
    Vandenberg AFB, CA
    #4
    Actually just about every battery operated device recommends this. I don't think its really going to be an issue though. As for real battery life...my money is on 4-6 hours realisticly.
     
  5. rbailer macrumors newbie

    Joined:
    Jun 13, 2007
    #5
    I have been thinking about this battery thing, and its definitely an issue because there is no replaceable battery. So can any expert on the subject please advice me on how to take care of my iphone in order to maximize battery life. I think these are two things that need to happen.

    1. Charge it and keep it connected to a power source until it is fully charged, the first time you get it.
    2. During the life of the iphone try to only charge the battery when it is completely dead instead of just charging it at night so that you have a full battery for the morning.
    3. Avoid keeping it plugged into a power source for a long period of time during use. (I think this is similar to a laptop that you leaved plugged in all of the time, when you finally unplug it to use as a true laptop, your battery life will be like 10 minutes.)
     
  6. dougbrowne macrumors member

    Joined:
    Jun 5, 2007
    #6

    They tell you have to take care of your battery and maximize it's life at http://www.apple.com/batteries/
     
  7. rbailer macrumors newbie

    Joined:
    Jun 13, 2007
    #7
    It looks like the apple site is sort of hinting that fully discharging your battery is bad because that completes a "charge cycle". The ipod has a very large amount of charge cycles to complete before it starts to lose power, but in this case, wouldn't it be better if you had the iphone plugged in whenever you can so that you do not have to go through part of a charge cycle?
     
  8. rbailer macrumors newbie

    Joined:
    Jun 13, 2007
    #8
    I just got a bit more information from the notebook pages of the apple site:

    "For proper maintenance of a lithium-based battery, it’s important to keep the electrons in it moving occasionally. Apple does not recommend leaving your portable plugged in all the time. An ideal use would be a commuter who uses her MacBook Pro on the train, then plugs it in at the office to charge. This keeps the battery juices flowing. If on the other hand, you use a desktop computer at work, and save a notebook for infrequent travel, Apple recommends charging and discharging its battery at least once per month."
     
  9. Sp71Supra macrumors regular

    Joined:
    Mar 6, 2007
    #9
    See.. I always thought you were suppost to run it fully dead 1st, then make a full charge overnight. I thought like if it came with 20% battery charge and you charge it right away, the memory will only see 80%, while as if you ran it completely dead as soon as you opened it out of the box and charge it when there is 0% battery left that it will retain a full 100%? I could be wrong.. thats just how I thought it worked.
     
  10. rbailer macrumors newbie

    Joined:
    Jun 13, 2007
    #10
    It would definitely be helpful to me if someone who knows what they are talking about can advise me on how to be kind to my phone's batter :)
     
  11. aristobrat macrumors G4

    Joined:
    Oct 14, 2005
    #11
    Are you thinking of battery memory? Some batteries work that way, but not lithium-ion, which is what iPods/iPhones use:
    http://www.batteryuniversity.com/partone-5.htm
     

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