When to Charge your iPad?

Discussion in 'iPad 3 Forum' started by armoredsaint, Mar 18, 2012.

  1. armoredsaint
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    armoredsaint iPF Novice

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    Being new to iPads, does it matter when or how often you charge it? Do you let it drop down to a certain percentage first?

    I wasn't sure if it's Li-Po batteries or not?
  2. Gabriel1
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    Gabriel1 Super Moderator Staff Member

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    No, there is no memory effect with these batteries. The only recommendation from Apple is that once a month you run a full discharge/recharge cycle but this is only to recalibrate the battery meter and for no other purpose.

    The Archangel
  3. 5er driver
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    5er driver iPF Novice

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    Mine arrived 85% full. I ran it down until it shut itself off and am now charging it back up to 100%. For day to day use it's a good idea to use it down to 40% and then charge it back to 100%. And as Gabriel says, once a month run it all the way down until it shuts itself off and charge it back up to 100%.
  4. Gabriel1
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    Gabriel1 Super Moderator Staff Member

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    Actually there is no guidance that says anything about 40% and 100%. There are no fixed guidelines, check out this link http://www.apple.com/batteries/

    The Archangel
  5. 5er driver
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    5er driver iPF Novice

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    Not from Apple, but from the manufacturers of lithium batteries. Normal usage and optimal care of the battery, perform a full recharge at 40%. Long term storage, store at 40%. The full discharge to device shutdown and recharge to 100% is an Apple suggestion to recalibrate the battery indicator of the device.
    Last edited: Mar 18, 2012
  6. Gabriel1
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    Gabriel1 Super Moderator Staff Member

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    Have you got a link? I'm always up for learning more.

    The Archangel
  7. 5er driver
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    5er driver iPF Novice

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  8. Gabriel1
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    Gabriel1 Super Moderator Staff Member

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    Google is my friend! But I still don't see where the 40%/100% comes from. Reading that article the 40% appears to refer to long term storage (not for a battery which is in regular use), which more or less adds up to Apples advice of 50% for long term storage. It does however mention that partial discharges are beneficial to battery life (as against full cycle discharges) so the Apple advice still appears to be the correct advice to follow.

    The Archangel
  9. 5er driver
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    5er driver iPF Novice

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    Right, there's nothing detrimental to the battery in Apple's advice. Even when discharging the battery until the device shuts itself off there is still a bit of reserve juice in the battery, it won't fully discharge to the point if harming the battery.
  10. ColemanLee09
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    ColemanLee09 iPF Novice

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    I usually just run it down to 10% or less then plug it in. Want to maximize the # of charges and battery life.
  11. Gabriel1
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    Gabriel1 Super Moderator Staff Member

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    You need to read the link that I posted above......

    100% charge is one cycle

    A 90% charge + 10% charge = one cycle

    Two 30% charges + one 40% charge = one cycle

    No matter how you do it you will have the same use/charge time as someone who only runs it own to 90% then charges.

    The Archangel
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  12. 5er driver
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    5er driver iPF Novice

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    The best way to extend the battery's life is to reduce the # of charge cycles it will have. That means leaving the device plugged to a power source as long as possible after the battery has fully charged, whether at home, at work, or in a car. For instance, at work in the office I leave my iPhone plugged in the whole day while I'm there. When I'm back home I leave it plugged in all the time. I will do the same with my new iPad which won't be leaving the house unless I travel on biz or pleasure. Conveniently I happen to have power outlets very near my office desk and my coffee table at home to be able to leave the devices plugged in and use them. I don't usually use a car charger unless driving for a long time.
    Last edited: Mar 18, 2012
  13. Gabriel1
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    Gabriel1 Super Moderator Staff Member

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    I could be wrong but I understand that doesn't work either.

    When plugged in the intelligent chargers allow the charge to drop slightly then top it up, it's like a constant mini cycle.......three things that you can't cheat, death, taxes and charge cycles!

    The Archangel
  14. geobernd
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    geobernd iPF Novice

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    5er driver: Not true for the iPads (and other Li-Ion) batteries... Gabriel1's description is correct.
  15. steftymo
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    steftymo iPF Noob

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    Slightly off topic but what is the effect on the battery if I charge it whilst using my ipad. Also is it possible to connect a usb extension lead to existing charging cable ?
  16. 5er driver
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    5er driver iPF Novice

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    What's not true?
  17. Gabriel1
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    Gabriel1 Super Moderator Staff Member

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    There is no detrimental effect on your battery if you use your iPad whilst charging.

    You can get longer charging leads but the longer they are the weaker the charging will get, there are limits when sending electricity down a cable but it's affected by many things, the actual make-up of the cable, the current being transmitted along the cable, etc (I don't have a clue what the etc might be!). So yes, it's possible but you may not get the results that you require.

    The Archangel
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  18. steftymo
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    steftymo iPF Noob

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    Thanks....I just thought that being the lazy so and so I am I could extend the charging cable so that I could sit on my sofa with my ipad plugged in to keep it fully charged. Do you know whether it is just an ordinary usb 2 cable?
  19. thewitt
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    thewitt iPad Ninja

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    You need to buy a high quality USB cable. Gold plated connectors. Heavy gauge wire. This will limit the current loss.
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  20. armoredsaint
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    armoredsaint iPF Novice

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    thanks - i was use to the guidelines on my MBP to re-cal, but wasn't sure if it applied to the ipad

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