How old is it?

Most devices with rechargeable batteries are designed to last for only a fixed number of charge-discharge cycles. When that number is approached (through use), devices will start to hold less power in a recharge and require it more often.

That's sounds to be happening, so that's why I ask.

There have been numerous complaints about battery life after the latest update, That is why I have not updated.

I noticed that the latest update turned Bluetooth on for me which will use your battery up more quickly. Go into settings and turn Bluetooth (and Cellular Data) off if you don’t need them.

I updated mine 10 days ago and haven't noticed a problem.

I said what I did because an iPad shouldn't normally have to be charged every day, as phoggie said was more typical, unless it's heavily used almost all day. Ours is used several hours a day and charged maybe every 5 days, sometimes less frequently.

https://www.google.com/search?q=ipad+battery+drain+after+update&oq=iPad+battery+drain+after+updating&aqs=chrome.1.69i57j0l3.20126j0j7&client=ms-android-att-us&sourceid=chrome-mobile&ie=UTF-8#xxri=1

Lots of complaints about the issue

The battery life on my IPhone 7 Plus is dreadful after the IOS 11 update. I loose 10% battery life every 15 minutes if I’m using the phone. I’ve been leaving it plugged in almost constantly now. Hopefully the next update fixes that.

I haven't noticed a problem since I did the update but I had read others were having issues. My iPad doesn't always charge right when I plug it in, tho and I don't know why. It's not old and very gently used. Do the chargers ever go bad? I'm using a brand new cable but still have the unpredictable charging problem.

As Elmer stated, the iPad is designed to charge a certain number of times. I forget the number. If it is still under warranty you can contact Apple for a replacement battery. If your out of warranty and the iPad "requires service due to the battery's diminished ability to hold an electrical charge" ( in Apples words) then you can take advantage of Apples battery replacement service. For $99 Apple will replace the entire iPad. Mine is close to 4 years old and it needs charging more often. I let it get down to ten percent before charging.

As raven posted, there are known battery drain issues with iOS 11, which have not been fixed with the latest point release, iOS 11.0.3. I haven't updated my iPhone 7 to iOS 11 yet, I'll wait for 11.1, where I suspect they will address the battery issues. Apple iOS 11.0.3 Release: Should You Upgrade?

FlamingO in AR I have a similar issue with my iPad Air, it will say "Not Charging", but if I leave it plugged in, it does eventually charge.

Elmer, my IPad is 2 1/2 years old so was surprised when Apple Store said the battery needs to be replaced. I do use it quite a bit and usually charge it nightly.

Marylmi...I was told replacement would be $99, but no mention of replacing my IPad....wish they would!

I have read many reports on update to 11.0.3 has caused many battery problems but Apple rep sounded like she has not heard of it.

I appreciate your responses.

You did the right thing by checking with the Apple Store, phoggie. They of course know their products so that's as informed an answer as can be had.

It varies from item to item, battery to battery, but as I said before, the number of charge<->discharge<-> charge cycles for any battery is limited. If you are recharging it every single day, that could be over 800 cycles and without knowing whatever the expected life of an ipad battery is, Apple's advice says you've arrived.

Do you wait until the battery is down to or near the warning level (I think with our iPad that's around 10% or high single digits) before plugging it in? You should. And when you plug it in, leave it connected until the recharge is complete.

Good luck.

I've heard that one no longer must totally drain a battery to get long battery life - new type of batteries.

How long a battery lasts depends on how much it is used. Elmer's right - they are built to only totally recharge a certain number of times before losing their charge quickly. I'm experiencing this with my supplemental oxygen, and the batteries for it are about $450! Supposed to replace them yearly...

You also need to check your settings periodically to make sure a lot of your apps aren’t refreshing in the background. Go to Settings/General/Background App Refresh and turn off the ones that don’t need to refresh. Most don’t. Turning down the brightness when not needed will also help, as will putting the device in Low Battery mode.

anglo, it's not a matter of draining the battery to get more life, I was speaking to not unnecessarily using up the finite number of recharge cycles.

If at the end of the day the battery is at 50-60%, there's no need to recharge it. Use it again tomorrow, and then tomorrow after using another 40%-50% of what it can hold, it'll be at 20% or lower and THEN recharge it. That's one recharge instead of two for those two days, 15 instead of 30 used up over one month. That doubles the calendar life of the battery.

Locations services also is a drain, turn it off or limit the number of apps that use it (Settings > Privacy > Location Services).

Elmer, thanks for explaining the battery charge. I have always been charging it every night...same for IPhone...now I will pay more attention to the percentage before charging.

Another day ... another piece of useful information learned ... in this increasingly complex world.

Thanks to the providers (though it doesn't affect me - yet?).

ole joyful