Hi Ronni Thanks for the response, which is helpful. I calibrated the battery once long ago, but have since tended to use the displayed 10 percent as my recharge signal.
However, when Apple claims that the iPad battery has a life of 1000 full charge-discharge cycles, I would have expected a Settings menu that would give a log of full and partial charge cycles. Might ask at the local Apple store one day when I have plenty of spare time. Cheers Alan On 19/05/2013, at 10:37 AM, Ronda Brown <[email protected]> wrote: > Hi Alan, > > "The only way to really know the state of your battery's health is through > how it performs in normal use, which is the only spec that is provided by > Apple. > The test you go through is a multi-stage one, as follows: > > Run your battery all the way down, in normal use, all the way until the iPad > shuts itself down. > Now re-calibrate your battery metering by plugging it into a known good > charging source, for which read the Power Adapter which came with it, and > charge it all the way up to 100%. It will take a few minutes before you see > and hear your iPad come back to life. > Once it reaches 100%, leave it overnight. The next day, just use it like you > normally do, do whatever it is that you normally do; but keep on doing it > until the battery goes flat and shuts it down agaion. Make note of how long > this took. The average user should expect about ten hours of use out if it, > on wifi, less on cellular, depending on how heavy your video loadng is. > > The recalibrating needs to be done every month or so to ensure that the > metering (the percentage that you read) remains fairly accurate. If you fail > to do that, eventually it will no longer be. > > If you get less time before it shuts down, try it again. If you consistently > get much less time than you should, then you definitely have a battery > capacity issue and need to start talking to Apple." > > There is 'Battery HD+'. But as I have never used it so cannot recommend it. > > Battery HD+ for iPhone, iPod touch and iPad on the iTunes App Store > <https://itunes.apple.com/au/app/battery-hd+/id331453283?mt=8> > > Cheers, > Ronni > > Sent from Ronni's iPad4 > > On 19/05/2013, at 10:08 AM, Alan Smith <[email protected]> wrote: > >> The battery of my iPad 2 now needs more frequent charging for normal use. >> >> How do I measure the capacity of the battery? >> How do I determine the number of full charge and discharge cycles that have >> been made? >> >> Regards, Alan >> >> Late 2012 iMac 27" Intel Quad Core i5 3.2Ghz 8GB RAM - OSX 10.8.2 >> Late 2009 iMac 21.5" Intel Core 2 Duo 3.06GHz 12G RAM - OSX 10.8.2 >> iPad2; ATV2; iPhone5 > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Settings & Unsubscribe - > <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>
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