Does % of battery will reduce while ipad under sleep mode
I found that my ipad battery power drop from 41% to 28% over a night
by the way i have close all to app.

No. It should not drop that much if all your apps are close. Most also 1-2% max. 13% drop is a lot while all apps are close.

it not happen until last week ,any suggest ? i not really use my ipad ,normally i just used at night to read magazine or web surfing while watching TV .i charge my ipad once a week ,until last week need charge twice a week.

maybe i shut it down tonight and see the result

try enabling airplane mode 1st when go to sleep.. see the differences.. btw, is ur ipad jailbroken?

The one that draining the most energy is wifi. No need to turn off your ipad, just turn off the wifi signal.

Is your iPad wifi only or with cellular ? SOmetimes it happens because of the poor 3G signal at your area and your ipad is constanly searching for the signal, that's why it consumes your battery even though with all your apps closed.
The best way to test it is to put on Airplane mode when u go to bed and see if it makes any diff.

P/s Personal experience.

no,i didn't

Yup. Maybe try putting it on flight mode tonight to see if there is difference. If still the same, do a clean restore to give it another try.

If it solves the problem than you are ok, if not its suspected hardware problem(battery). Time to send it for warranty claim.

my is wifi 32G only,all the while i just leave it with wifi connection and never off unless charging ,let me try airplane mode

There you go, that's your culprit. I'd bet my 100 poker dollar I'm right.

i have 2 ipad2.. 1 with jailbroken 32G and the other just wifi 16G, I find enabling the Airplane mode saves battery more becoz of it turn ur wifi Off, try turning the location service off, the push mail, off the game notification and so on

Turning Airplane mode on will automatically turn ur wifi off

Wish u Luck -,=

yes your right,once i turn to airplane mode the battery status remain the same % after over a night.as conclusion wifi drained all my battery.

I have a question.

Why before that not happen?

I suspect you have most of your Apps notification "ON", some Notifications may runs by automatic schedule to get the latest updates just like the "Push Mail" method. I will only "ON" certain Apps notification if needed but turn "OFF" most of others.

Sometimes, the battery indicator might not be that accurate especially when your ipad is with lower battery level.

For example, you leave your ipad with wifi on with 98% at the night and found out that your ipad with 97% when you wake up. If you leave your ipad with wifi on with 50% of battery in the night, u may actually found that your ipad left with 47% of battery when u wake up.

This has to do with the battery indicator and it is software related. We cant exactly predict the amount of battery life left, but we DO ABLE to approximate it accurately with minimum error

This post has been edited by christcwl9: Jul 18 2012, 02:06 PM

I dont really know if this is a fact o not -,=... But from my experience the last 20% of the battery level (That is 80%-100%) took about more Time to charge while other 20% (Example 30%-50%) or (50%-70%) took less time to charge... SAME GOES to draining the battery life... 80% and above will drain at a slow rate.. while below 70% the battery will drain much faster...

Its show that the battery charging/draining rate is not always the same.. At least What was shown (The battery level) can be trusted and my ipad dont suddenly run out of batteries -,=

Bro, this is because Apple implement something on it which will make the charging process faster in the early ( Before it reaches 80% ) to provide user a faster time to charge and take their idevices out.

For the battery draining part, i am not very sure it is a fact or not, but i strongly agree that no battery monitor software is 100% accurate. Have you tried to turn off your ipad when it is 95% and when turn on back it shows 100% ? I experienced this until boring dy and my 100 to 99% after 8 hours charge seems drop so fast, like the same rate as 80 to 79%, which opposed to some who claim that the 1% can actually last for around 1 hour of wifi browsing after a full charge ( 8 hours + charge ).

This is most commonly experienced by me after updated to latest firmware IOS 5.1.1. So i think Apple had to do something with the code of it about their battery level detection.

SO at the end of the day, if you can get 10 Hours of straight usage, thats more than enough already No need to care about those tiny changes in battery level as it might be probably due to the error in battery level detection.

True.. But i dont think i get 10 hours straight use =( i think around 6Hours.. OMG My ipad its BROKEN
straight use also depends on what u use it for right? If straight playing games(My main purpose of buying the Ipad), how long can Ur Ipad Survive? Izzit still 10 hours? then its sure is the new ipad -,- while mine is just Ipad2

Lol didnt see ur Signature (The new Ipad)

This post has been edited by gObLiN VaiZaRd: Jul 18 2012, 03:37 PM

LOL! Ur ipad already 1 year + bro ? Yea, i can get 10 hours aproximately for constant use. My usage is all the time surfing via 3G I seldom play game on it, and i dont think it can last 10 hours straight for gaming But i do read some reviews on it claiming that they can run up to 9 hours + of gaming, but i am not sure about wat is the condition when they test the new iPad, perhaps with quite low brightness and as well as the weather there is not that hot as in Malaysia. Many possibilities take into account here.

After some time , your battery will degrade, and no worries, as long as it can hold up for you for the day, it is totally fine And for you information, the battery is to be undergone Full charge and recharge cycle for 1000 times

True Again -,=
Turning Brightness under 50 this too can save Battery.., Im Using 40++

Gud for you having the new ipad -,=

Yea i am using around 40% brightness as well, but due to i am constanly using 3G and wifi is always off, so my ipad will consume more energy compared to those who use wifi only.

If u have extra $, try to sell ur ipad 2 and get the new ipad