can i let my battery charge go to zero?

Discussion in 'iPad FAQ' started by 88raymond, Aug 2, 2011.

  1. 88raymond
    Offline

    88raymond iPad Fan

    Joined:
    Jul 22, 2011
    Messages:
    285
    Thanks Received:
    5
    Trophy Points:
    0
    Ratings:
    +5 / 0
    will this not harm my unit? or its contents? i'm now at almost 5% without my charger...
     
  2. JSmooth
    Offline

    JSmooth iPF Novice

    Joined:
    Jul 22, 2011
    Messages:
    24
    Thanks Received:
    0
    Trophy Points:
    0
    Ratings:
    +0 / 0
    I usually always let mine go to zero unless I'm in the middle of something important!!!
    I think it's just like cell phones if u let them die then charge it back up it keeps a better longer charge!!
     
  3. JSmooth
    Offline

    JSmooth iPF Novice

    Joined:
    Jul 22, 2011
    Messages:
    24
    Thanks Received:
    0
    Trophy Points:
    0
    Ratings:
    +0 / 0
    It has never messed up ne of my contents!
     
  4. Tim SPRACKLEN
    Offline

    Tim SPRACKLEN iPad Legend

    Joined:
    Jan 3, 2011
    Messages:
    15,236
    Thanks Received:
    121
    Trophy Points:
    0
    Location:
    Scotland
    Ratings:
    +121 / 0
  5. 88raymond
    Offline

    88raymond iPad Fan

    Joined:
    Jul 22, 2011
    Messages:
    285
    Thanks Received:
    5
    Trophy Points:
    0
    Ratings:
    +5 / 0
    thanks again! completely running it down...

    "Use Your iPad Regularly
    For proper reporting of the battery’s state of charge, be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down)."
     
  6. thewitt
    Offline

    thewitt iPad Ninja

    Joined:
    Jun 5, 2011
    Messages:
    1,634
    Thanks Received:
    72
    Trophy Points:
    48
    Ratings:
    +79 / 0
    It does not make your battery hold a charge longer, it simply makes the meter more accurate.

    -t
     
  7. 88raymond
    Offline

    88raymond iPad Fan

    Joined:
    Jul 22, 2011
    Messages:
    285
    Thanks Received:
    5
    Trophy Points:
    0
    Ratings:
    +5 / 0
    i think in the long run, it will make my battery hold a charge longer, as this is dependent on the number of cycles of charging/discharging. the # of cycles will be lesser if i completely charge and discharge, so it will take longer to reach 80%.

    hope my reasoning isn't skewed, lol!
     
  8. twerppoet
    Offline

    twerppoet iPad Legend

    Joined:
    Jan 8, 2011
    Messages:
    17,013
    Thanks Received:
    2,327
    Trophy Points:
    113
    Location:
    Walla Walla, WA
    Ratings:
    +2,807 / 1
    When they advertise the number of charge cycles they don't mean the number of times you charge the battery. It means the number of times a battery goes through a full 100% of a cycle. I you charge the battery at 20% one day, 30% the next, and 50% the third day you've only gone through one full charge cycle.

    Lithium-ion batteries actually last longer if you do not fully discharge them constantly. As stated earlier, the only reason Apple recommends the full charge cycle is that it re-calibrates the software that tells you how full the battery is.
     
    Last edited: Aug 3, 2011
  9. 88raymond
    Offline

    88raymond iPad Fan

    Joined:
    Jul 22, 2011
    Messages:
    285
    Thanks Received:
    5
    Trophy Points:
    0
    Ratings:
    +5 / 0
    that makes everyth8ng clear. thanks!
     
  10. gmaines
    Offline

    gmaines iPad Fan

    Joined:
    Mar 29, 2011
    Messages:
    103
    Thanks Received:
    0
    Trophy Points:
    0
    Location:
    Riverside, CA
    Ratings:
    +0 / 0
    Thanks for the info....
     
  11. buttrpecan1
    Offline

    buttrpecan1 iPF Novice

    Joined:
    Jun 15, 2011
    Messages:
    58
    Thanks Received:
    0
    Trophy Points:
    0
    Ratings:
    +0 / 0
    Im sorry. I stll dont fully understand. So its btter to rechage it at a lower battery level than to put it on charger when youre not using it? I usually have my ipad on the charger if im not actually using it.

    Sent from my iPad 2 using iPF
     
  12. twerppoet
    Offline

    twerppoet iPad Legend

    Joined:
    Jan 8, 2011
    Messages:
    17,013
    Thanks Received:
    2,327
    Trophy Points:
    113
    Location:
    Walla Walla, WA
    Ratings:
    +2,807 / 1
    Don't worry about it. Charge the iPad whenever it is convenient. What you are doing is fine.

    Every once in a while, once a month by Apples recommendation, but that is probably not necessary, charge the iPad to 100%, then use it until the it shuts itself down. This helps keep the percentage indicator calibrated.

    http://www.apple.com/batteries/ipad.html
     
    Last edited: Aug 4, 2011
  13. irwiss
    Offline

    irwiss iPF Noob

    Joined:
    Aug 2, 2011
    Messages:
    1
    Thanks Received:
    0
    Trophy Points:
    0
    Ratings:
    +0 / 0
    I can't post this as a link, since I've below 3 posts :( Copypaste to address bar for more detailed essay:
    batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

    This is the answer to your question.

    There's a table in the essay detailing this, simply put; over the course of a year given room temperature storage - a battery which is kept at 100% charge will degrade 20% capacity, a battery which is kept at 40% charge will degrade 4%.
    Some laptops alleviate the problem by turning off charging if current charge is above a certain threshold, not certain if the ipad has something similar.
    In my opinion, by the time you'll see serious degradation in battery capacity you'll most likely use a newer version of your device.

    Summarizing, in order of importance/convenience;
    • Keep battery below 30C(Car in direct sunlight can be above 30C in most places)
    • Don't fully discharge.
    • Don't fully charge and leave it at 100% charge for long periods.
    • If you also want your meter to be accurate you need to make a full discharge cycle once in a while.
     
  14. buttrpecan1
    Offline

    buttrpecan1 iPF Novice

    Joined:
    Jun 15, 2011
    Messages:
    58
    Thanks Received:
    0
    Trophy Points:
    0
    Ratings:
    +0 / 0
    Thx. That summary of importance was very easy to understand.

    Sent from my iPad 2 using iPF
     
  15. 88raymond
    Offline

    88raymond iPad Fan

    Joined:
    Jul 22, 2011
    Messages:
    285
    Thanks Received:
    5
    Trophy Points:
    0
    Ratings:
    +5 / 0
    in order to satisfy one of the summaries,

    "Don't fully charge and leave it at 100% charge for long periods."

    there's an app at cydia - full charge alert - that prompts you with a notification sound and alert when the battery charge reaches 100%. now i can easily determine when to stop charging..
     
    Last edited: Aug 14, 2011

Share This Page

Search tags for this page

letting ipad battery die

,

should i let my ipad battery die

,

should i let my ipad battery die before recharging

,
should you let ipad battery die
,

should you let ipad battery die before charging