New iPhone to feature new battery chemistry - possibly more efficient and cycle life

Discussion in 'iPhone' started by chrmjenkins, Aug 27, 2012.

  1. chrmjenkins, Aug 27, 2012
    Last edited: Aug 27, 2012

    chrmjenkins macrumors 603

    chrmjenkins

    Joined:
    Oct 29, 2007
    Location:
    CA
    #1
    I've tried to get MacRumors to cover this and it hasn't happened so I thought I would post it here for those interested.

    The new iPhone is very likely to feature a new battery chemistry that is more efficient and lasts more charge cycles without degradation, something Apple has made a big deal about in their laptops. There are several news stories and rumors to support this. The first is the battery leak that happened August 9th

    If you notice in the photo on that news story, the nominal voltage on the battery is 3.8V. Normal Li-Ion batteries in mobile devices have 3.7V. Now, this likely isn't just a case of an overcharged battery, because the droid bionic had a similar battery and anandtech did a little digging on it.

    [​IMG]

    Anandtech Bionic story

    [​IMG]

    To make things more interesting, the rumors surrounding LG's forthcoming Optimus G superphone (seriously, it's a beast) mention a new battery technology as well. If apple is sourcing displays from them, it's possible they'd also be sourcing batteries. The fact that the manufacturer is Samsung on the previous photo isn't really a problem because Apple sources multiple manufacturers for most all of their components.

    The verge covered this story about the battery as well as mentioned the new IPS, likely in-cell, display they will be using, which is a preview for the iPhone as well.

    LG Press Release

    Besides having more charges (meaning it degrades slower), what does more efficient mean? Well, it can mean one or both of two things. The first is that it charges faster because less electricity is wasted in charging. The second is that it actually discharges slower and lasts longer because less power is wasted in loss (such as heat) when powering the device. Given they say it delivers more power than similarly-sized batteries, I would bet at least the latter is true. That means more battery life out of the same mAh number.

    For those interested, here's the video talking about the new screen (in Korean): http://www.youtube.com/watch?v=Gv_Je1jXEOU

    Look at the PCB and battery orientation:

    On August 22, macrumors featured another battery leak with a battery that featured a 3.7V battery as we would expect. The part number was also similar to the iPhone 4 battery. edit: arn pointed out this story is a year old (whoops), so it's a non-issue. That was the 4S battery, which was still being called iPhone 5 at the time. Most of the discussion below is relevant and it legitimizes the PCB and battery compatibility.

    [​IMG]

    Leaked PCB and housing shots suggest that the PCB will be on the right of the new iphone, not the left as in legacy iPhone devices (4 and 4S included). The battery connector also seems compatible across generations. Looking at the leaked PCB shots isn't conclusive given its blurry nature. However, if you compare the iphone PCB shot with the iPhone 5 PCB shot, it seems the iPhone 5 might have a compatible connection due to their extreme similarity, and one must also ask why they would be that different across the batteries anyway.

    Given the evidence, I think we'll likely see a new battery chemistry in the next iPhone. However, this needs to be taken with a grain of salt, since we don't know if the 3.8V chemistry is what LG is using. Even if we find out that the new LG battery is 3.8V, that doesn't mean it's the same 3.8V technology we're seeing in the new iPhone. Since Apple loves to talk about their batteries, if it is featured, I think there's a good possibility they may talk about it. If they do, that could confirm they're using LG's tech. Still, if they're using a 3.8V battery, one must ask why Apple made the change if it didn't have some benefits in store for the new iPhone ultimately. It does, without question, at least confirm a new battery chemistry. The nominal voltages of batteries are directly related to the chemistry utilized within, so you wouldn't get 3.7V and 3.8V both using the exact same chemistry.

    From the anandtech article:
    iPhone 4 PCB on left of device:
    [​IMG]
    PCB now on right of device:
    [​IMG]

    [​IMG]
    iPhone 4 PCB
    [​IMG]
    [​IMG]
    iPhone 5 PCB shots
     
  2. hypnoz macrumors member

    Joined:
    Oct 19, 2011
    #2
    Very very interesting. Let's hope this is true:)
     
  3. AustinIllini macrumors demi-god

    AustinIllini

    Joined:
    Oct 20, 2011
    Location:
    Austin, TX
    #3
    iPhone 7 with a fuel cell is what I'm looking forward to. I could go for some Kindle-like battery lives.
     
  4. chrmjenkins thread starter macrumors 603

    chrmjenkins

    Joined:
    Oct 29, 2007
    Location:
    CA
    #4
    Anandtech has published an article at least partially supporting my claims:

     
  5. Geckotek macrumors G3

    Geckotek

    Joined:
    Jul 22, 2008
    Location:
    NYC
    #5
    I think the iPhone 4 PCB only appears to be on the left. That phone should be upside down...back off. (notice rear camera in upper left)
     
  6. CallOfDuty macrumors 6502

    Joined:
    Jun 23, 2012
    #6
    Extremely logical and meaningful article. Kudos to that thread starter! This should be considered by MR to be featured on the news page. :)
     
  7. chambone macrumors 6502a

    chambone

    Joined:
    Dec 24, 2011
    Location:
    Netherlands
    #7
    The iphone 5 is opened from the front so the boards are on the same side. Also, I doubt there's a noticeable difference in upping the voltage with 0.1 V. Tangible, yes. Breakthrough, no. New battery chemistry or not, the amount of watt-hours ultimately decides how much energy a battery is able to provide. 1440 mAh at roughly the same nominal voltage doesn't somehow become 'better' because different materials are used. Numbers are numbers. Someone correct me if I'm wrong.
     
  8. mostlydave macrumors regular

    Joined:
    Aug 5, 2011
    #8
    I agree! There has been nothing else posted today anyways!
     
  9. ARSC macrumors 6502

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    Jun 27, 2010
  10. TsunamiTheClown macrumors 6502a

    TsunamiTheClown

    Joined:
    Apr 28, 2011
    Location:
    Fiery+Cross+Reef
    #10
    Good research and presentation. Thanks for the article.
     
  11. VSMacOne macrumors 601

    VSMacOne

    Joined:
    Oct 18, 2008
    #11
    Nothing wrong with your theory. I like your work!
     

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