Left new iPhone 5 battery discharged overnight

Discussion in 'iPhone' started by asenna, Dec 1, 2012.

  1. asenna macrumors newbie

    Oct 30, 2012
    Is leaving the iPhone fully discharged (battery drained until it automatically shutoff) for about 8 hours bad for it? I know lipo's do not like to be discharged too much and car batteries typically lose large amounts of capacity when left under a certain voltage.

    Just got this phone and was breaking in the battery but it died overnight and I didnt notice until morning.
  2. lke macrumors 6502a

    Jun 19, 2009
    Don't worry too much for your iphone. It has a great battery that last for years.

    My first generation iphone still works, also all my ipod and my ipad first generation.

    The batteries that Apple use are very good.
  3. BigMcGuire Contributor


    Jan 10, 2012
    I've done TONS of reading on batteries. Leaving it discharged overnight shouldn't hurt. For weeks? You might destroy it. Going below 20% should be avoided but from what I'm reading Apple may (or may not) already do that when it's 0% - leaving a % behind so it doesn't completely discharge.

    I've NEVER completely discharged my iPhone (4s or 5). I don't believe in it. To keep my batteries healthy, I'll discharge them to 30% - 50% once a week or so.
  4. takeshi74 macrumors 601

    Feb 9, 2011
    You don't need to "break in" the battery.

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