Letting Battery Run All the Way Down

Discussion in 'iPhone Tips, Help and Troubleshooting' started by kas23, Jun 27, 2010.

  1. kas23 macrumors 603

    kas23

    Joined:
    Oct 28, 2007
    #1
    Is letting your battery on your iPhone drain completely down (till it shuts itself off) a bad thing? I did it to my old 3G once and it was never the same, but it was old at the time. Now, I accidentally let this happen to my iPhone 4. Is this bad?
     
  2. quagmire macrumors 603

    quagmire

    Joined:
    Apr 19, 2004
    #2
    If you keep on doing it, yes it is bad. Apple recommends doing it once a month to keep it healthy, but 100% to 0% drains and then recharging is hard on the battery and does reduce its longevity. That is why GM at least is only allowing people the use of 50% of the Volt's Lithium-Ion battery. Its charge state is 30% to 80% where the wear and tear on the battery will be minimal. I did it twice to my iPhone 4 to calibrate the software, but I tend to charge my iPhone when it hits 20%.
     
  3. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.

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