iPhone Double Battery Life Mod

Discussion in 'Jailbreaks and iOS Hacks' started by OSUengineer, Apr 15, 2012.

  1. OSUengineer, Apr 15, 2012
    Last edited: May 7, 2012

    macrumors member

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    Apr 15, 2012
    #1
    Hi I am an engineering student at OSU and wanted more battery life while studying and pulling all nighters on my iPhone 4. So I added a second battery!

    I had to fab a new back for the phone but the upside is the back it now aluminum and doesn't need a back cover, just maybe a bumper so it is smaller than if it had an otter box. Here is the final product! It looks a little jankey but I did make it with a dremel, a file, a hammer, and some stong epoxy. Let me know if you have questions or would like me to make one for you! It is fully reversible for warranties as well. It gets about twice the battery life as the original. Enjoy!

    Edit: The start of version two are the last two!
     

    Attached Files:

  2. macrumors 6502a

    Mars478

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    #2
    Legend! Can you show us the inside?
     
  3. thread starter macrumors member

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    #3
    I have a lot of homework for tonight but what the heck! i'll shoot one up here. brb
     
  4. 3bs
    macrumors 603

    3bs

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    #4
    Impressive that you did that all by yourself.
     
  5. thread starter macrumors member

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    #5
    Here you go! I wanted to shrink rap the inside but I was a little too excited.
     

    Attached Files:

  6. thread starter macrumors member

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    #6
    Thanks man!:) I have done cooler stuff, just nothing with a device that half of the people in the world own! haha
     
  7. macrumors 68000

    Kyotoma

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    #7
    That's a great proof of concept. Now I wonder: could you do it with a same form-factor but with a single unit? I realize that you'd probably then have to develop a custom battery for this but hey, one can dream.

    Go Buckeyes! Haha. I'll be down in Columbus next month for Rock on the Range. :)
     
  8. macrumors 68000

    Kyotoma

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    #8
    Awesome.
     
  9. macrumors 6502a

    Mars478

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    #9
    So you just stacked two batteries together and soldered them into parallel? How's the battery life looking?
     
  10. thread starter macrumors member

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    Apr 15, 2012
    #10
    Haha! Sweet! Go Bucks!

    I was thinking about the same back glass with just a spacer and making the back not be conformed to the 2nd battery. It would just be a little thicker but then wider (higher capacity) battery of the same thickness would probobly be able to take up the empty space for more than double the battery life of the original. I wish someone would sell a battery + back cover kit since there are so many replacements already.

    ----------

    That is pretty much it! haha It is almost exacltly twice as long as the original. I got ~23 hours of video until it was at 5%.
     
  11. thread starter macrumors member

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    #11
    I am also modding my old case to accept the mod as well and will put up pictures when I am all done. :) Thanks for looking.
     
  12. macrumors regular

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    Apr 12, 2012
    #12
    Pretty awesome man!
     
  13. macrumors 68000

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    #13
    for someone who wants to make a quick bucks. book a ticket to china and tell them to produce jumbo battery for iPhone and a compatible back cover. why there is no people doing this? :mad:

    LOL.. :D
     
  14. macrumors 68040

    bandofbrothers

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    #14
    Awesome concept.

    Im sure some will want this as the only other concept i know is the case you can buy that gives extra juice.

    Personally I'm not taken with the extra bulk either concept gives.

    One can only hope that Apple continually improve their battery stats.
     
  15. macrumors 68020

    charlieegan3

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    #15
    looks really ugly to me.
     
  16. macrumors 68040

    bandofbrothers

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    #16

    Functionality over aesthetics.
     
  17. macrumors 68020

    charlieegan3

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    #17
    sure, but not a choice i would make...
     
  18. macrumors 68040

    bandofbrothers

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    #18
    I agree with you which is what i said in my earlier post
     
  19. macrumors 68000

    VulchR

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    #19
  20. macrumors 68000

    Kyotoma

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    #20
    Not really the point he was trying to make.
     
  21. macrumors 68000

    VulchR

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    #21
    You're right - I just don't get it. My bad. :eek:
     
  22. macrumors regular

    Benson11

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    #22
    Wow..It's impressive and unique job indeed. Very well done!
     
  23. macrumors newbie

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    Apr 16, 2012
    #23
    amazing. how long hold the battery now ?
     
  24. macrumors regular

    pollaxe

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    #24
    Good work! :)
     
  25. macrumors 6502a

    Mars478

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    #25
    Since the iPhone 4 battery is about 1400MaH it would now be 2800MaH in the phone, directly connected, unliked the Juice packs or etc.
     

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