14 Replies Latest reply: Aug 11, 2010 1:45 PM by Allan Sampson
Confidemus Level 1 Level 1 (0 points)
With phones I have owned in the past I have read in the instructions that you should charge for 16 hours for the first charge to give it longer life in future.

That is not the case for all phones though.

Is there a recommended FIRST CHARGE time for the iPhone 4?

iOS 4
  • pberk Level 2 Level 2 (285 points)
    To calibrate the battery, you should let the phone run down completely (until it turns off), then give it a full charge overnight if you can... some people recommend doing this twice... and some people say you should do this at least once a month to keep your battery in top shape (apple does recommend the latter for their laptops)..
  • Allan Sampson Level 10 Level 10 (123,370 points)
    In a word, no.

    When the iPhone's battery is completely charged while remaining connected to a power source, charging stops.
  • rbrylawski Level 6 Level 6 (11,820 points)
    Until it's at 100% charge. iPhone charge pretty quickly. Many often suggest letting it run down completely at least once a month to charge fully, but I've not found that to be necessary at all and my battery is lasting 2 - 3 days on a single charge.......
  • Matthew Morgan Level 7 Level 7 (22,595 points)
  • Allan Sampson Level 10 Level 10 (123,370 points)
    This does not calibrate the battery - this calibrates the iPhone's battery indicator.
  • pberk Level 2 Level 2 (285 points)
    Sorry... you're right, it does not "calibrate" the battery... it "conditions" the battery
  • Allan Sampson Level 10 Level 10 (123,370 points)
    "Comditioning" the battery is not mentioned with this link but "calibrating" the battery's indicator is mentioned.

    http://support.apple.com/kb/ht1490
  • tal1971 Level 2 Level 2 (245 points)
    pberk wrote:
    To calibrate the battery, you should let the phone run down completely (until it turns off), then give it a full charge overnight if you can... some people recommend doing this twice... and some people say you should do this at least once a month to keep your battery in top shape (apple does recommend the latter for their laptops)..


    Apple also recommends the same for iPhone's too (see at the bottom of the page in the below link).

    http://www.apple.com/batteries/iphone.html
  • Allan Sampson Level 10 Level 10 (123,370 points)
    Copied from the link you provided.

    For proper maintenance of a lithium-based battery, it’s important to keep the electrons in it moving occasionally. Be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down).


    One charge cycle does not have to mean allowing a fully charged battery to run completely down until the iPhone powers off.

    Copied from this link.

    http://www.apple.com/batteries/

    A charge cycle means using all of the battery’s power, but that doesn’t necessarily mean a single charge. For instance, you could listen to your iPod for a few hours one day, using half its power, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two, so you may take several days to complete a cycle.
  • jeeper01ca Level 1 Level 1 (30 points)
    I have spoken with a genius tech and a rep tech from apple technical support, they both told me that that first charge should be done after the battery is completely drained.

    However, It is recommended to repeat the same thing for the first 1 charges, if possible. After that, the phone should be charged whenever is possible and no matter when.
  • pberk Level 2 Level 2 (285 points)
    Allan Sampson wrote:
    Copied from the link you provided.

    For proper maintenance of a lithium-based battery, it’s important to keep the electrons in it moving occasionally. Be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down).


    One charge cycle does not have to mean allowing a fully charged battery to run completely down until the iPhone powers off.

    Copied from this link.

    http://www.apple.com/batteries/

    A charge cycle means using all of the battery’s power, but that doesn’t necessarily mean a single charge. For instance, you could listen to your iPod for a few hours one day, using half its power, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two, so you may take several days to complete a cycle.



    For the purposes of conditioning your battery - they DO mean one FULL charge cycle. Charging to 100% and then completely draining and then recharging to 100%

    The second link you have references how you compute charge cycles for the purpose of determining battery life - if the battery life is 400 charge cycles, then it is equal to 400 x 100% charges, i.e., 4 25% percent charges equal one full charge cycle..
  • Allan Sampson Level 10 Level 10 (123,370 points)
    It refers to a full CHARGE CYCLE with both.

    Once again - CHARGE CYCLE, and this is a charge cycle.

    *A charge cycle means using all of the battery’s power, _but that doesn’t necessarily mean a single charge._* For instance, you could listen to your iPod for a few hours one day, using half its power, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two, so you may take several days to complete a cycle.


    Please provide a link where Apple recommends or specifies "conditioning" the battery with the iPhone or doing any special with the iPhone in regards to the battery except for doing a full CHARGE CYCLE at least once a month.

    You can't because there isn't one.
  • Confidemus Level 1 Level 1 (0 points)
    Right, so to sum up, when I receive my iPhone I should let it drain completely then give it it's first charge and then after that I should just charge it every day?

    That right?
  • Allan Sampson Level 10 Level 10 (123,370 points)
    To sum it up, when you receive your iPhone you can let the battery drain completely followed fully charging the battery which won't make any difference.