How to train your iPhone battery PROPERLY

Discussion in 'iPhone' started by CSpackler, Oct 2, 2012.

  1. CSpackler macrumors regular


    Jun 22, 2010
    On a plane
    I see a lot of threads about poor battery life.

    While it's true that lithium ion batteries don't need traditional training, they do lose sync with their internal meter which tells it how much charge to accept, how much is remaining, etc. This happens as you use your phone normally and should be repeated about once a month to keep your battery in tip-top shape.

    To fully realize the potential of your battery, do this:

    1. Use phone until it turns off.
    2. Plug into wall charger.
    3. Phone will power on after a few minutes.
    4. Turn it back OFF.
    5. Wait three hours to ensure the last of the trickle charge gets in there.
    6. Power your phone back on. If the meter does not read 100%, power back down and continue charging.

    That's it! Powering while off prevents parasitic load, which is basically the device and the battery vying for power. This can confuse the battery's internal "meter" so to speak.

    Also, this is not meant to be a magic bullet for battery life. if you use your phone a lot, get lots of notifications, or are in a poor signal area, your battery will drain faster. Hopefully you can eek out a few extra minutes by using this method :cool:

    Please post your findings if this helps!
  2. DaGrandMastah macrumors 6502a

    Mar 19, 2011

    Great post. I was hoping someone would put something up like this about battery life. This should be stickied.
  3. justperry macrumors G3


    Aug 10, 2007
    In the core of a black hole.
    A Lithium Ion cells is full when it reaches a certain threshold, usually 4.2 Volts, full is full.
    Same for when it's empty, you can not over discharge a Lithium, it will break the battery.
    Usually just run it until it switches off by itself and recharge, no need for your process.
  4. Adutrumque macrumors 65816


    Mar 8, 2012
    I got this tip when asking for tips regarding charging the phone for the first time. Iam getting pretty good battery time. Posted 1 pic in the merged thread.
  5. BFizzzle macrumors 68020


    May 31, 2010
    Austin TX
  6. Mercenary macrumors 65816


    Sep 17, 2012
    But apples advice is to just use the phone and charge when possible.
  7. Ishimaru macrumors 6502a

    Jun 18, 2009
    Los Angeles
    This is what Apple says about batteries:

  8. JonMPLS macrumors 65816

    May 23, 2010
    Just forgot one thing: to aim the phone at Cupertino when charging.
  9. FSMBP macrumors 68020


    Jan 22, 2009
    Doesn't that go without saying?
  10. divisionbuyzero, Oct 2, 2012
    Last edited: Oct 2, 2012

    divisionbuyzero macrumors member


    Sep 16, 2012
    justperry is correct -- no need to do all those steps just make sure you run your phone down completely (until it shuts off) and charge up past 100% once a month. Bottom line, don't be one of those people who throw it on a charger every time it reaches 50%. Giving the internal meter full cycles is ideal.
  11. jlake02 macrumors 68020


    Nov 2, 2008
    I'm a big believer in the suggestions the OP made. They have worked for me in the past.

    The thing that people need to realize is that with each new iPhone and iOS the phone is doing more and more. Twitter, Facebook, location services, push email, LTE, etc, etc. These things take a toll on battery life no matter what tricks are used.

    Personally I wish Apple would have left the phone thickness the same as the 4S and put a better battery in. Regardless what power saving techniques they are using, a ~1440 mAH battery is NOT sufficient for today's tech and lifestyles. I really hope they find a way to get closer to 2,000 mAH for the 5S.
  12. barkomatic macrumors 68040

    Aug 8, 2008
    While training your battery, be certain to give it a doggy treat for good performance.
  13. Matthew9559 macrumors 6502a


    Apr 7, 2007
    Cleveland, OH
    As stated, you don't need all your steps. All you should do is fully discharge and charge back to 100% once a month.
  14. quagmire macrumors 603


    Apr 19, 2004
    Full 100% down to 0% cycles kills a batteries longevity. It's a good idea to occasionally fully drain it, but not to do it every time.

    It's why electric vehicles like the Chevy Volt don't use 100% of their batteries capacity. For the Chevy Volt, it only drains down to 25-30% charge and it only charges to 80% full. It helps to ensure the battery will last for a long time.
  15. metsjetsfan macrumors 65816

    Feb 2, 2011
    The parasitic load thing is on battery university which is a well regarded site but not sure why apple didn't but it on their page or at least program ios6 to not turn on.

    my guess is in the end cspackler is right it will add just very small margins to your batt life maybe 1-3% at most. And like others said maybe not necessary.
  16. Rocko1 macrumors 68020


    Nov 3, 2011
    Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The shorter the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles to prolong life, other than to calibrate the fuel gauge on a smart battery once in a while.
  17. KoukiFC3S macrumors 6502a

    Jul 4, 2010
    These are all the battery tips you need to know:

    -Charge as often as possible up to 90%
    -Don't leave it plugged in at 100%
    -Discharge from 100% to 0% once a month
  18. chambone macrumors 6502a


    Dec 24, 2011
    That's bad advice. It's actually the other way around. Throwing it on the charger at 40 and taking it off at 90% will keep the battery's capacity up for a very long time. Fully cycling it each time will kill a li-ion battery within a year.
  19. Rocko1 macrumors 68020


    Nov 3, 2011
    True. Low DoD, (smaller charges) will lengthen the life of the battery, not high DoD(deep charges).
  20. Zac7 macrumors 6502a

    Jan 9, 2011
    That's 100% correct.
  21. Steve686 macrumors 68040


    Nov 13, 2007
    US>FL>Miami/Dade>Sunny Isles Beach>Condo
    Just reboot your phone periodically.

    Achieves the same result.
  22. HowardSmith macrumors 6502a

    Sep 13, 2012
    There is nothing you can do to greatly increase the battery life on your iPhone. I just remove it from the box and use it the first day. Before I go to bed, I put it on the charger.

    Repeat daily until iPhone 6 arrives! Too many people OCD about their battery!
  23. divisionbuyzero macrumors member


    Sep 16, 2012
    I was sure I included "once a month" in my post, odd. Either way, what I said was correct I just forgot to include the "once a month" part. Your phone will never actually reach 0% (apple shuts it down with a huge safety margin since depleting a battery to true 0% is bad), but doing a full cycle from shutdown to 100%+ once a month is correct usage.

    See the above.
  24. hoppyjr macrumors newbie

    Sep 21, 2012
    Lots of mis-information and self styled electronics experts out there....

    FACT: Lithium Ion (Li-Ion) and Lithium Polymer (Li-Po) batteries do NOT suffer from the memory effect, nor do they require periodic "conditioning" (discharge/charge) as the old Nickel Cadmium (NiCad) or Nickel Metal Hydride (NiMh) did. I believe no manufacturers have used the old tech batteries for years. The iPhone uses the lithium based batteries, so plug in and charge! The lithium based batteries actually perform best and last longer when "topped off" as opposed to discharged and recharged. Also, the phone has circuitry to prevent overcharging, so don't worry about unplugging when fully charged.

    If you don't believe, stop reading forum posts and do the research for yourself - you'll see I'm correct.
  25. Gjwilly macrumors 68030

    May 1, 2011
    SF Bay Area
    Two different issues going on here.
    Preserving the life of the battery and correctly caibrating the battery gauge to the battery's capacity.
    For the latter, you do want to run the battery all the way down occasionally.

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