battery charge - 80% alarm

Discussion in 'iOS Apps' started by gim, Mar 28, 2016.

  1. gim, Mar 28, 2016
    Last edited: Mar 28, 2016

    gim macrumors 6502

    gim

    Joined:
    Jul 27, 2014
    #1
    So I'm looking for an App that rings an alarm when my iOS devices are hitting 80% while charging. So far I've only found several apps that would notify me when the device is fully charged. Any chance there is an app out there that lets you set a custom alarm regarding the battery percentage?

    Please don't try to teach me anything about batteries and if it's good if you don't regularly charge them to 100%.
    I've had very good experience with the longevity of my batteries when I only used them between 20 and 80%.

    I am thankful for every hint regarding an appropriate app.
     
  2. Gav2k macrumors G3

    Gav2k

    Joined:
    Jul 24, 2009
    #2
    For android there are plenty I've not come across any on iOS.

    I'll say nothing more as requested ;)
     
  3. DeltaMac macrumors G3

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #3
    OK, also nothing much to add, except a question (no teaching here, either :D )

    How did you settle on the arbitrary "80%" as your ideal maximum charge?

    Sounds like some number associated with NiCad batteries, but not sure if I remember accurately that far back...
     
  4. gim thread starter macrumors 6502

    gim

    Joined:
    Jul 27, 2014
    #4
    Well, on a regular day I simply don't need more than 60% of battery. So instead of using the top 60% and going 100% -> 40% every day, I usually go for the middle 60%, so it's 80% -> 20%.
     
  5. Gav2k macrumors G3

    Gav2k

    Joined:
    Jul 24, 2009
    #5
    Remember that 80-100% is charged at a different rate too. But cycling the battery once in a while is advisable. (Not that I'm offering any advice. Though it does sound like I am. Damn it)
     
  6. DeltaMac macrumors G3

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #7
    OTOH, if you used 90% -> 30%, your experience would be more consistent, as you would then not "risk" going into the low power mode at >20%. Maybe that's not a concern for you, but there it is.
    Or, 70>10 would be even better, as you would spend a good amount of time in the low power mode, and would normally take longer to use that same 60%.
     
  7. now i see it macrumors 68040

    Joined:
    Jan 2, 2002
    #8
    Charge Alarm Pro

    [​IMG]

    Charge Alarm Pro by John Kowalik
    https://appsto.re/us/hzr2_.i


    You can have it ring an alarm (many to choose from) at any % state of charge. Not just 80%.

    Caveat is that the app has to be in the foreground to work. No lock screen, not in the background.

    So it's good if you want to put your phone on a charger and then leave it undisturbed and then have it set off an alarm at your chosen state of charge....

    But if you want to use your phone while it's charging, this app is worthless and won't work.
     
  8. gim thread starter macrumors 6502

    gim

    Joined:
    Jul 27, 2014
    #9
    Thanks for your input!
    As of today, I am still using an ancient iPhone 4 with iOS 7, so there is no low power mode.
    But I will consider this strategy for my new iPhone SE :)

    Thank you so much, this app is exactly what I was looking for. :) Tested it on my iPad Air and it worked flawlessly. It even works when the device is locked, as long as the app is in the foreground when you lock the device. Awesome!
     
  9. now i see it, Apr 12, 2016
    Last edited: Apr 12, 2016

    now i see it macrumors 68040

    Joined:
    Jan 2, 2002
    #10
    This is ankther really good app.
    Works in the background and you can set low or high alarm (one beep and notification) at any % charge you want.
    I think it's great. Good for charging while you're using it to remind you to unplug or reminding you to plug in while using it (or not using it) at your set level.

    Low Battery - Phone battery power glance & notifications by Ben Guild
    https://appsto.re/us/3ed2N.i

    image.jpeg
     
  10. mvsvika macrumors newbie

    mvsvika

    Joined:
    Mar 3, 2015
    #11
    With all due respect, 80% is Not an arbitrary figure. Please check out " Battery University " https://batteryuniversity.com/. It is explained 80% Maximum charge and 40% minimum charge. Go beyond these parameters and the battery is "Stressed " . Please follow the link above. You're Welcome

     
  11. C DM macrumors Sandy Bridge

    Joined:
    Oct 17, 2011
    #12
    What talks about the battery being stressed being outside of those percentages, at least to the point where it's actually detrimental to it in a meaningful/noticeable way?
     
  12. mvsvika macrumors newbie

    mvsvika

    Joined:
    Mar 3, 2015
    #13
    --- Post Merged, Dec 15, 2018 ---
    Please read the Entire article https://batteryuniversity.com/. About 26 pages. Can't say which page but the information is Excellent. How an old PowerBook G4 15 ". The battery lasted for almost 3 years.
    --- Post Merged, Dec 15, 2018 ---
    No arbitrary 80% figure . That percentage is straight from https://batteryuniversity.com/. Please read Entire article some 26 pages, Excellent information , also No teaching here :). Best regards
     
  13. gim thread starter macrumors 6502

    gim

    Joined:
    Jul 27, 2014
    #14
    Arbitrary or not, my charging rule still works great.
    5 year old iPad Air, way over 1000 charging cycles now, still 91% of the original capacity left.
     
  14. C DM macrumors Sandy Bridge

    Joined:
    Oct 17, 2011
    #15
    Something in particular has to address that 80% mark and that it's actually meaningfully/noticeably detrimental beyond that. Just saying read the whole site that has tons of information isn't really going to address a particular point (and, yes, over the years I've read a lot of what's on the site, as have many others I'm sure).
     
  15. mvsvika macrumors newbie

    mvsvika

    Joined:
    Mar 3, 2015
    #16
    --- Post Merged, Dec 19, 2018 ---
    The app you're looking for is called " Fruitjuice" available on the iOs application store or iTunes. Good luck, Best regards. M. Svika
     
  16. arsharpe, May 24, 2019
    Last edited: May 24, 2019

    arsharpe macrumors newbie

    Joined:
    May 24, 2019
    #17
    Glad to hear from someone thinking the same.

    I am developing an external bluetooth controlled USB switch to remove the need to manual plug-in/out. It automatically controls the charger to keep the battery around the best storage charge level to extend the battery shelf cycle and minimise deep-discharge effect on cycle life.

    When I had a new iPhone the battery arrived at 60% so that is probably the best shelf life charge level. The default setting for my product will be to turn charger on at 55% and off at 65%. Longer term there will be a facility to automatically charge to 80 or 100% ready for a given time (eg a long unpowered trip).

    I will be starting a user group (probably on LinkedIn) to evaluate some prototypes and get user feedback. If you are anyone else wants to get involved please let me know.
     

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16 March 28, 2016