I fully charged my ipad yesterday and in the morning it said 100% full. I didn't use my ipad for about 4 hours and when I picked it up afterwards I saw that the battery level had dropped to 32%. Any idea what caused the sudden drop? This rarely happens. My ipad battery has lasted better on days that I used it constantly.
Looking forward to your suggestions.
Using the battery level meter in this manner is comparable to using your car's fuel gauge to calculate miles per gallon. The only thing that matters is the total amount of operating time from full charge to auto-shutdown.
Use the wall-mount charger that came with the iPad and charge overnight. Do NOT use an iPod/iPhone charger. Do NOT use a computer's USB port. Then, operate it normally until auto shut-down (ignore any low level alerts that may appear). An irony is that doing that test to determine the total operating time is also the procedure necessary to calibrate the battery level meter.
I'm not claiming that you do not have a problem. I am stating, however, that we don't yet know. If the above test does, in fact, indicate a problem, read this.
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).
Elsewhere, Apple elaborates and explains that two half-discharges (or four quarter-discharges, etc.) equals one full discharge.
Let me put it this way. When the battery works as normal I know how long that is. So it's obvious to me when the battery percentage drops significantly and not lasting the day. I don't think the car example was the best way to compare this. The percentage gage on any apply device should be a good indication as to how much usage time they have left. Again as I said, I know this is not normal because this never happens and my iPad doesnt usually turn off so early.
As mentioned in the post, I was not using the iPad for 4 hours and I saw it dropped 70%+.
Check battery usage in the Settings app to determine what app or process is using up your battery.
Settings > General > Usage > Battery Usage
Give it a minute to list the apps that have used your battery.
If there doesn't seem to be a suspicious app or process there, charge your iPad and turn it off for the night. I do not mean let it sleep, hold the power button until the Slide to Power Off appears and slide to power off. If the battery has drained over night your have a hardware failure. Make an appointment at an Apple Store to have your device examined by a technician. Or contact Apple Support..
Look in the notification center. I've found apps are defaulted to on when they are installed and sometimes after software updates. Which means there is stuff running in the background that you may not need.
Also look for background app update and background app refresh. These also run in the background and can drain your battery.
Thanks for all the replies. My battery seems to be acting normally again. I checked what programs were running in the background and there was none so I still don't know what caused the battery drop the other day.
Battery goes down for no reason
