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  1. Thread AuthorThread Author   #1  
    lmws214's Avatar
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    Default Is it true that we have to wait till our battery is at 20% and below to charge it

    Hi all,

    May I ask this question please?

    Is it true that we have to wait till our battery is at 20% and below to charge it so as to protect the battery life span and to make the standby hours last longer ?
    Jazzy79 likes this.
  2. #2  
    Vinu Jacob's Avatar
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    Default Re: To charge only when it is less than 20%?

    Hello, while this was true at some point in the past, this is no longer the case, the current generation of iphones have Li-Po batteries, which do not have any type of battery memory, and should be topped off when you have a chance to do so. They are capable of being charged from any point in their battery strength without any adverse affects. Hope that helps.
  3. #3  

    Default Re: To charge only when it is less than 20%?

    Quote Originally Posted by lmws214 View Post
    Hi all,

    May I ask this question please?

    Is it true that we have to wait till our battery is at 20% and below to charge it so as to protect the battery life span and to make the standby hours last longer ?
    Nope. Nothing to worry about. Just as Vinu Jacob explained, battery memory is a thing of the past. Charge at your convenience. As a side note, you should store your device at 50% battery level if you don't plan on using it for a long period of time.

    Batteries - Maximizing Performance - Apple
    libra89 likes this.
  4. Thread AuthorThread Author   #4  
    lmws214's Avatar
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    Default Re: To charge only when it is less than 20%?

    Thank you for the timely information. Cheers
  5. #5  

    Default Re: To charge only when it is less than 20%?

    Quote Originally Posted by lmws214 View Post
    Thank you for the timely information. Cheers
    You're welcome
  6. #6  
    TripleOne's Avatar
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    Default Re: To charge only when it is less than 20%?

    Charge it whenever you need to
  7. #7  
    jsntrenkler's Avatar
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    Default Re: To charge only when it is less than 20%?

    I have had thrown all of my idevices (since first iPhone) on the charger before bed every night and have never had a problem.
    Spencerdl likes this.
  8. #8  
    xboxbml's Avatar
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    Default Re: To charge only when it is less than 20%?

    Me too... I get good usage out of this 6s+...9 hrs usage and 59 hrs standby...not bad..I'll top it off sometimes if I know I won't be able to charge for a while... No issues here...
    Spencerdl likes this.
  9. #9  
    gpobernardo's Avatar
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    Default Re: To charge only when it is less than 20%?

    Quote Originally Posted by lmws214 View Post
    Hi all,

    May I ask this question please?

    Is it true that we have to wait till our battery is at 20% and below to charge it so as to protect the battery life span and to make the standby hours last longer ?
    Lithium-based batteries (including Li-Po) indeed do not have battery memory effects, but they still suffer from battery wear. With this, one must try not to let the battery undergo a charge-discharge cycle that is greater than 50%. That means that you should start considering charging your phone once it reaches 50% if you intend to charge it all the way back up to 100%, or from 20% to 70%.

    Even further, Lithium-based batteries last longer (not in terms of power delivery, but in terms of service life) when the charge is maintained at around 70-80%. But this would be extreme already, and would be obviously inconvenient for the user... yet it must be note mentioning that this is the reason some devices have the option to "extend battery service life by not charging the battery fully to 100% every time".

    Personally, I keep a powerbank with me and charge my phone once it starts reaching 50-60%.

    Memory effects in battery technology may be long gone, but right now battery wear is real. Unless we find better and more economical ways of containing ion-migration for portable energy storage, this would be our best practice: avoid a charge-discharge cycle greater than 50%.

    P.S.
    New technology is coming, though. Expect revolutionary changes in battery technology in 3-5 years (unless some marketing giant hinders it). Businesses (of course, including Apple) would release ambiguous statements as to how to exactly maximize the battery life of their devices because doing so would decrease after-sales revenues from replacement batteries or servicing units. But that is my advice - coming from someone whose research is partly in the field of energy storage.
  10. Thread AuthorThread Author   #10  
    lmws214's Avatar
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    Default Re: To charge only when it is less than 20%?

    Thank you
    gpobernardo likes this.
  11. #11  

    Default Re: To charge only when it is less than 20%?

    Quote Originally Posted by TripleOne View Post
    Charge it whenever you need to
    This is what I do. Just charge it, it'll be fine. Avoid going down to 0% frequently, but otherwise charge when you want.
    gpobernardo likes this.
  12. Thread AuthorThread Author   #12  
    lmws214's Avatar
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    Default Re: To charge only when it is less than 20%?

    Thank you
  13. #13  
    TripleOne's Avatar
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    Default Re: To charge only when it is less than 20%?

    Quote Originally Posted by robertk328 View Post
    This is what I do. Just charge it, it'll be fine. Avoid going down to 0% frequently, but otherwise charge when you want.
  14. #14  
    CarRamRod2690's Avatar
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    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    I have never done this with any new phones and never had an issue. But I was always told you want it to run down all the way and then charge it back up but I'm someone who likes to have my battery fully charged all the time..haha
  15. #15  

    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    Quote Originally Posted by CarRamRod2690 View Post
    I have never done this with any new phones and never had an issue. But I was always told you want it to run down all the way and then charge it back up but I'm someone who likes to have my battery fully charged all the time..haha
    Years ago that was true. Not like that now. You can charge any way you want anytime.
    libra89 likes this.
  16. #16  

    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    Quote Originally Posted by CarRamRod2690 View Post
    I have never done this with any new phones and never had an issue. But I was always told you want it to run down all the way and then charge it back up but I'm someone who likes to have my battery fully charged all the time..haha
    It helps periodically if you're having issues with the battery meter (to calibrate it) but otherwise not necessary.
    libra89 likes this.
  17. Thread AuthorThread Author   #17  
    lmws214's Avatar
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    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    How to calibrate??
  18. #18  

    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    Quote Originally Posted by lmws214 View Post
    How to calibrate??
    Run the battery down to 1%. Then charge it up to 100%. When it gets to 100%, let it continue to charge another 30 minutes. It's best not to use the phone during this charging.
    gpobernardo likes this.
  19. Thread AuthorThread Author   #19  
    lmws214's Avatar
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    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    How often should I run the battery down to 1%?
    Once a month?
  20. #20  
    TripleOne's Avatar
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    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    Quote Originally Posted by lmws214 View Post
    How often should I run the battery down to 1%?
    Once a month?
    Yup!

    I do it once a month as suggested by Apple.
    libra89 and gpobernardo like this.
  21. Thread AuthorThread Author   #21  
    lmws214's Avatar
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    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    Suggested by Apple? Wow. Nice info u have shared.
  22. #22  
    TripleOne's Avatar
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    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    Quote Originally Posted by lmws214 View Post
    Suggested by Apple? Wow. Nice info u have shared.
    Yep!
  23. Thread AuthorThread Author   #23  
    lmws214's Avatar
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    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    Thank you
  24. #24  

    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    Quote Originally Posted by lmws214 View Post
    Thank you
    Calibrating actually does nothing to the battery itself. It has more to do with the % indicator in the status bar. It resets it so it shows more accurately. Many of our battery issues are in fact false readings.
    Chris Kerrigan likes this.
  25. #25  
    xboxbml's Avatar
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    Default Re: Is it true that we have to wait till our battery is at 20% and below to charge it

    Quote Originally Posted by Ledsteplin View Post
    Calibrating actually does nothing to the battery itself. It has more to do with the % indicator in the status bar. It resets it so it shows more accurately. Many of our battery issues are in fact false readings.
    Right...it lets iOS factor in the actual remaining battery charge life...batteries lose charging capacity over time... Letting it calibrate the battery every once in a while will give u a more accurate reading on how much charge u really have left..
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