Other hints to extend battery life?

Discussion in 'iPhone' started by ras113, Feb 19, 2018.

  1. ras113 macrumors member

    Oct 23, 2017
    what do you recommendate to extend battery life...I am not talking about the IOS, apps, screen, light..etc..

    I usually let battery run out to 10% (its whole day using) and then let it charge over the night while i sleep and unplug it when i wake up .. ? good or bad?

    what about partial charging, like charge from 30% to 45% or 40% to 60%? is that bad ?

    all charging over 80%? ok or bad?

    I dont remember where i read that the best for battery is to charge it between 40% and pull charger out at 80% ..?
  2. rugmankc Contributor


    Sep 24, 2014
  3. BasicGreatGuy Contributor


    Sep 21, 2012
    In the middle of several books.
    "I usually let battery run out to 10% (its whole day using) and then let it charge over the night while i sleep and unplug it when i wake up"

    Nothing wrong with what you are doing, OP. Enjoy your phone and try not to overthink the obvious.
  4. tonybarnaby macrumors 65816

    Dec 3, 2017
    There are tons of rules to consider. A few that won't give you battery ocd or take over your life:

    Frequent charges are better than deep discharges. It's better to go from 100-50% two times than 100-0% once

    Heat is the number one enemy of batteries

    20-80% is a good rule of thumb if you can manage it. The bottom 20% and upper 20% are harder on the lithium ions. A battery is in it's sweet spot from about 60-50%, but it's not realistic to always keep it there.

    The bottom 20% are the most harmful to the lithium ion, so if you use 80% per day then going from 100-20% is better than 80-0%.

    Depth of discharge is important. 100-75% 4 times is better than 100-0 once. A 25% depth of discharge is better than a 100% drain.
  5. EM2013 macrumors 68000


    Sep 2, 2013
    Always charge mine overnight. I plug it in no matter what percentage and leave it charging.
  6. MacDawg macrumors Core


    Mar 20, 2004
    "Between the Hedges"
    I'm not too good at remembering or following rules and I can't be bothered with checking to see what range of % I'm at
    So I just keep it simple:
    • I charge it every night
    • I charge it during the day if I feel like I have used it more than normal and I might need the extra charge
  7. rugmankc Contributor


    Sep 24, 2014
    As MacDawg said----

    I charge when I think I need to, no rules

    I have never had a battery issue on any phone I have owned

    This is not something to even think, let alone worry about----
  8. ras113 thread starter macrumors member

    Oct 23, 2017
    Thank you for the answers..

    Of course im not overthinking about this, but if some of hints could save battery and is possible to follow them then why not.

    I actually have a power socket with the timer, so i could make it to cut the power and stop charging after 2 hours..

    I also can mid-charge it during the day, but i have allways wanted to discharge before charging full again. And now i see thats wrong.

    How bad is it to use phone while charging? Someone here mentioned the heat is bad and the phone is getting more heat when used and charging?
  9. ApfelKuchen macrumors 68030

    Aug 28, 2012
    Between the coasts
    No problem using the phone when connected to charger. I've done that constantly, for many years, and people with MacBooks do the same.

    Is there a heat risk to use-while-charging? Maybe, if the air temperature is already high. But at typical room temperatures? No.

    Modern lithium ion-powered devices have sophisticated power control circuits for charging and use. While there may be some small benefit in charging to only 80%, it's not worth the trouble, imo. The charging circuits are designed to be gentle on the batteries, usually tapering-off charging current as the batteries approach full. The whole thing with setting a timer every time you charge... way too much.

    While I have no science to back it up, you might gain more by reducing heat build-up in other ways - like avoiding protective cases that retain a lot of heat, or not laying the iPhone flat on a table while charging - stand it in such a way that air circulates more freely around the back of the phone.

    One thing not mentioned here (but mentioned in Apple's literature) is that for long term storage, it's better to leave the battery at around 50% charge, rather than either full or empty.

    As I see it, anything an end-user could do to extend the life of the battery might, perhaps, extend life by 10-20%. In other words, the battery might wear out after 26-28 months, instead of 24 months. Unless you're planning to use the same phone for more than 4 years, whether you replace the battery at 24 months or 28 months isn't going to make much difference.
  10. Newtons Apple macrumors Core

    Newtons Apple

    Mar 12, 2014
    Jacksonville, Florida
    You must use your phone way more than me. The least I have had left was 30% at the end of the day, most the time it is 50% remaining. Anyway, you are doing great by charging overnight.
  11. ACG12 macrumors 6502a

    Jun 9, 2015
    Get a smart battery case like I did. Problem solved :D
  12. tonybarnaby macrumors 65816

    Dec 3, 2017
    Doesn’t help if you have an X or a plus.
  13. lynchdavidh macrumors member


    Feb 14, 2018
    New York
    Here are a lot of great iPhone battery tips. A lot of the time, software problems are draining your iPhone's battery!

    Turn off things like Location Services, background app refresh, and push notifications for apps when you don't need them. Stop sharing iPhone analytics data and turn off an widgets you don't use!
  14. ras113 thread starter macrumors member

    Oct 23, 2017

    I mentioned that this thread should not consider ios, rather general tips on lithium battery to prelong life Time. Dont take this wrong. :) :)

    Newton apple

    Off topic but:

    I could give you an example. When i was using iphone 6, my battery time from 100-10% in 5 hours.

    I gave that phone to my mother, running the same version of ios 11.2.1. I cheked battery usage today on iphone 6:
    7hours and 30 minutes usage time
    72 hours standby.
    20% left.

    Thats incredible! But she also uses 3-4 apps only. Runkeeper and viber the most. No Lte, only wifi at home.

    Me on the other side in last 24 hours:
    Safari 37% 2.4. Hours
    Internet sharing 31%
    Spotify 8% 1.3hours
    Lot of this are surfing in 4G.

    I surf much of the time, sometime i have 70% battery usage om Safari. Not so much watchinh videos on, just regular surf on twitter, here, news... forums..
  15. now i see it macrumors 68040

    Jan 2, 2002
    Check out batteryuniversity.com



    Basically the less deep you discharge the iphone battery before recharging it, the longer life span it will have.

    Charging it higher than 80% is harder on the battery and will decrease its life span a bit. Keeping the charge between 80% and 100% is a lot harder on battery than keeping it between 60% and 80%. Higher voltages decrease the life of LiIon batteries. Also the iPhone charge rate starts tapering off above 80%.

    It takes a LOT longer to charge from 80% to 100% than it does from 60 to 80.

    The 'ultimate' charging points to discharge down to and then charge back up to are about 65% on the low end, and then unplug at 75% as can be seen on that graph.

    This would give the longest battery life but doing this isn't realistic at all. So anything beyond those numbers decreases the battery life a bit, but makes the phone more usable.

    Also I'm not sure how long the lightening port in the iPhone will last. It's possible to wear it out if you're plugging & unplugging the cable several times a day / so you might prolong the battery but wreck the port $$$$$. A battery is a lot cheaper to replace.

    If you're near power most of the day, I'd try to keep the charge between 50 & 80%. If you're going to be away from power I'd bring a battery pack to ensure that the battery never dropped below 30%. But that's just me.
  16. Sheldonsmith macrumors 6502


    May 14, 2011
    I charge my phone(s) overnight without any battery durability issues. To extend battery life on a given charge, I switch the screen to gray scale (as black is natural to the screen and does not require any extra power (unlike LCD). There are a couple of sites via Google what show how to toggle to grayscale screen.
  17. ras113 thread starter macrumors member

    Oct 23, 2017

    Very good diagram. :)
    It only misses what happends if you do 100-10%—>100% .. just for comparing :) i have done that allways and after a year i would say that my battery have not been good anymore..

    If i can - without overthinking i will try with 80%-30% ..

    I have also seen that once in a month its good to go to zero 0% and back to maxium 100%.. is that something to consider?
  18. now i see it macrumors 68040

    Jan 2, 2002
    You can see by that chart that charging to 100% is the prime degrader of the battery regardless of how far it's discharged. It's not the depth of discharge that's decreasing the battery life so much, it's the high voltage when charging it to 100%.

    Any deep discharge and full charge is harder on the battery than gentle ones.
    Every few months if the battery is discharged down into the 20's then charged fully to 100% with the screen off, that will recalibrate the battery state of charge display. Don't use the phone when you want to recalibrate the state of charge. Let it charge up fully to 100% and maybe 15-20 minutes longer. Use the little 5 watt charger that came with the phone (not an iPad charger or other big charger)

    No need to run the battery down to zero. It's definitely hard on it and doesn't accomplish anything worthwhile.
  19. ras113 thread starter macrumors member

    Oct 23, 2017
    Okk.. thank you :)

    Never use fast charge , only when i have to plug iphone with macbook pro with usb-c ports.

    What about powerbanks? I own on.. anything to try to avoid?
  20. jav6454 macrumors P6


    Nov 14, 2007
    1 Geostationary Tower Plaza
    If you are going to use power banks... try using Apple's own Smart Battery Cases. They are designed to talk to the Ax chip in your iPhone. That ensures proper power delivery when charging and also extends your battery life.
  21. BriiiDK macrumors newbie


    Mar 19, 2018

    I would go for a powerbank! I have a couple Anker powerbank depending on my needs, like these two:
    Anker PowerCore+ 10050 mAh
    Anker PowerCore Mini 3350 mAh

    Both works perfect for my needs! :)
  22. mikzn macrumors 65816


    Sep 2, 2013
    There are some apps that really hit the battery hard like driving with MAPS activated as a navigation tool - or google

    Or any running / cycling apps that use the same GPS functions.

    Some can be running in the background uselessly and setting the "location" properly (Never? / While Using?) can make a big difference to the battery life.

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21 February 19, 2018