1. Due to the recent site upgrade, the iPadForums (iPF) App will no longer work. The new iPadForums.net website has been designed from the ground up to work perfectly from any mobile, tablet, or desktop computer using the built in internet browser. Create a shortcut to iPadForums.net on your home screen by following these steps: Create an icon for iPadForums.net

Battery Level Reading

Discussion in 'iPad 3 Forum' started by AQ_OC, Mar 21, 2012.

  1. AQ_OC
    Offline

    AQ_OC Super Moderator Staff Member

    Joined:
    Apr 28, 2011
    Messages:
    6,418
    Thanks Received:
    430
    Trophy Points:
    83
    Location:
    SC
    Ratings:
    +430 / 0
    I have my iPad New set to display a number representing the charge-level of the battery.

    I was just using it downstairs and noted the level was at 97 %. I was getting ready to step out, so I decided to top it off right quick while I get ready. As soon as I plug it in to power, the reading jumps to 100%. Unplug it, back go 97%. Plug it in again, 100% again. Unplug, 97. Plug in one more time, 97% and charging.

    What gives?

    And my iPad is NOT overheating or getting hot. :)
  2. Skull One
    Offline

    Skull One iPad Junkie

    Joined:
    Mar 7, 2012
    Messages:
    612
    Thanks Received:
    78
    Trophy Points:
    28
    Ratings:
    +78 / 0
    LOL... That is a neat feature of iOS 5.X. If the charging circuit determines you are within X percentage of full charge, it doesn't kick into Stage 2 or Stage 3 charging. It simply goes to Stage 4 charging which is a top off low current charge.

    Same thing happens on the iPhones.
  3. AQ_OC
    Offline

    AQ_OC Super Moderator Staff Member

    Joined:
    Apr 28, 2011
    Messages:
    6,418
    Thanks Received:
    430
    Trophy Points:
    83
    Location:
    SC
    Ratings:
    +430 / 0
    Oh...ok...that's good to know...stage 4 charging...thanks. :)
  4. Skull One
    Offline

    Skull One iPad Junkie

    Joined:
    Mar 7, 2012
    Messages:
    612
    Thanks Received:
    78
    Trophy Points:
    28
    Ratings:
    +78 / 0
    There is actually a pretty detailed specification for 4 stage and 3 stage charging of Lithium-Ion batteries. The 4 stage version really protects the anode from plating. Between that and one of the three chemical variations, you can get over 500 full cycle charges out of a battery. Which is pretty impressive considering we started out at below 300 just a few years ago.
  5. grouchomarx
    Offline

    grouchomarx iPad Fan

    Joined:
    Mar 10, 2012
    Messages:
    103
    Thanks Received:
    5
    Trophy Points:
    0
    Location:
    California
    Ratings:
    +5 / 0
    Thanks for the info. I get everything except it being a "neat" feature. What is so neat about it? 5% being 5% but if I want to be on the road and that 5% may give some peace of mind...
  6. Skull One
    Offline

    Skull One iPad Junkie

    Joined:
    Mar 7, 2012
    Messages:
    612
    Thanks Received:
    78
    Trophy Points:
    28
    Ratings:
    +78 / 0
    It is neat because it protects the anode of the battery from plating. This means a much longer battery life for the consumer.

    But I will agree it is annoying that there isn't a better way to communicate this to the consumer.
  7. grouchomarx
    Offline

    grouchomarx iPad Fan

    Joined:
    Mar 10, 2012
    Messages:
    103
    Thanks Received:
    5
    Trophy Points:
    0
    Location:
    California
    Ratings:
    +5 / 0
    Okay, I take the explanation.

    I can also see people's eyes rolling when they hear this anode plating thingin...
  8. Skull One
    Offline

    Skull One iPad Junkie

    Joined:
    Mar 7, 2012
    Messages:
    612
    Thanks Received:
    78
    Trophy Points:
    28
    Ratings:
    +78 / 0
    No doubt. No one should have to learn chemistry to use a dang cell phone or other portable device.
  9. AlexisW
    Offline

    AlexisW iPad Fan

    Joined:
    Mar 6, 2012
    Messages:
    115
    Thanks Received:
    2
    Trophy Points:
    0
    Location:
    SC on the water
    Ratings:
    +2 / 0
    So, how long should an iPad last with the original battery? Is there a point that the battery will become useless?
  10. Skull One
    Offline

    Skull One iPad Junkie

    Joined:
    Mar 7, 2012
    Messages:
    612
    Thanks Received:
    78
    Trophy Points:
    28
    Ratings:
    +78 / 0
    Don't quote me on this, but I believe the battery setup in the iPad (1st Gen) and iPad 2 are both rated for 400 full cycle charges and still able to maintain 80% original capacity. So lets say you recharge it every day from 40% back to 100%.

    400 charges * 100% = 40000%
    40000% / 60% (per day) = 667 days or 1 year and 10 months roughly.

    Now the odds of the average user doing that is pretty slim. That is why 2 to 3 years is the more commonly thrown around number.

    With my iPad 2, I recharge every other day when it finally hits 40%. So for me that would be 3 years and 8 months roughly.
  11. seneca18
    Offline

    seneca18 Super Moderator Staff Member

    Joined:
    Dec 23, 2011
    Messages:
    639
    Thanks Received:
    20
    Trophy Points:
    0
    Location:
    Denver, CO
    Ratings:
    +20 / 0
    Once again, great info Skull...
  12. AlexisW
    Offline

    AlexisW iPad Fan

    Joined:
    Mar 6, 2012
    Messages:
    115
    Thanks Received:
    2
    Trophy Points:
    0
    Location:
    SC on the water
    Ratings:
    +2 / 0
    Are you saying that I just spent a ton of money for a product that will only last for approx 3 years?
  13. Skull One
    Offline

    Skull One iPad Junkie

    Joined:
    Mar 7, 2012
    Messages:
    612
    Thanks Received:
    78
    Trophy Points:
    28
    Ratings:
    +78 / 0
    No I am not. I am saying the battery has an expected operational life. In 3 years the battery will only be 80% as powerful as the day you bought it. But it will still work properly.

    Think of it this way. If you get 10 hours of usage per 100% charge today, in three years you will only get 8 hours per charge. In 6 years your battery might only give you 5 hour of usage per 100% charge. And yes, the battery will eventually fail. At that point you have two choices. Buy the iPad (9th Gen) or buy a new battery, if you can find one ;)
  14. Seadog
    Offline

    Seadog Super Moderator Staff Member

    Joined:
    Mar 25, 2010
    Messages:
    2,522
    Thanks Received:
    52
    Trophy Points:
    0
    Location:
    Oklahoma
    Ratings:
    +52 / 0
    There is an issue reported about issues with the battery indicator on the new iPads. It sounds like a software tweek will come out in the near future to fix it. MacRumors has the story.
  15. grouchomarx
    Offline

    grouchomarx iPad Fan

    Joined:
    Mar 10, 2012
    Messages:
    103
    Thanks Received:
    5
    Trophy Points:
    0
    Location:
    California
    Ratings:
    +5 / 0
    If your battery is weak, Apple has a program to swap you a refurbished iPad for $99 if you don't have Applecare. It of course cannot an upgrade.

Share This Page

Search tags for this page
battery charging iphone jumps from 97 to 100
,
charge level on ipad
,
check battery levels on ipad2
,
check ipad battery level
,
how to check battery level on ipad
,
how to check ipad battery level
,
how to find battery level on ipad
,
ipad 3 battery level indicator
,
ipad battery 2 readings
,

ipad battery level indicator

,
ipad battery not reading numbers
,
ipad charger is three stage
,
iphone battery from 100 to 97
,
iphone battery jumped from 97 to 100
,
my ipad doesnt show battery level
,
my ipad jumps from 40% to 100% when charged
,
recharge ipad battery at whatlevel
,
set battery level ipad
,
unplug ipad 97%