iPad Pro Battery Drain

Given you difficulties, I recommend that you ensure that your iPad data is backed-up to iCloud or iTunes - then work through increasingly thorough reset steps.

When you’re ready, try these one at a time - moving on to the next step if unsuccessful in resolving the problem.

1) Reset All Settings (this will not erase your data):

Settings > General > Reset > Reset All Settings

You’ll need to re-input any WiFi settings after the reset.

2) Erase All Content & Settings (this will erase you data):

Settings > General > Reset > Erase All Content & Settings

Your data can be optionally restored from your backup after the reset. For expediency, you may wish to verify that any problems are resolved prior to restoring your data.

3) Restore your iPad to Factor Settings (this procedure will erase any data present on the iPad):

https://support.apple.com/en-gb/HT201252

This process will completely reset your iPad and install a fresh copy of the most recent version of iPadOS supported by your iPad.

Per step #2, your data can be optionally restored from your backup at conclusion of the restore process. For expediency, you may wish to verify that any problems are resolved prior to restoring your data.

First, lets tackle the immediate usability problem - recognising that this is not intended to fix the issue, but instead make your iPad usable without being tethered to a wall socket... this being a very useful attribute if you rely upon a portable device. Right now, given the current problems in getting access to “physical” resources, this serves (at least) as a practical and pragmatic interim measure.

You should invest in a “good” high-capacity Power Bank. The will serve as an external portable battery to both charge and simultaneously power your iPad (and other portable devices) whilst away from a socket. Ending later today, Zagg (one of many high quality manufacturers - and one of those whose products are carried by Apple in their online and physical stores) have a 25% Off sale if you buy from them directly.

I both use and recommend this:

https://www.zagg.com/en_uk/powerstation-usbc-3xl

The current Zagg Sale makes this very attractive, but other lower-capacity/cheaper alternatives are available from their website. Just remember, capacity is king! The suggested model also supports PD Fast Charging - this being a feature of your iPad Pro that will provide significant benefit.

Now, with the immediate usability issue addressed, we can consider cause and remedy of potential problems...

The first and perhaps most obvious item to try is a forced-restart of your iPad - as this often resolves both isolated issues and resets unexpected power hogs:

• On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On an iPad with Face ID: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.

If these measures don’t improve matters, we can go deeper into potential remedies.

I hope these suggestions prove to be helpful - and move you closer to resolution.

I’m delighted to learn that we’ve resolved the problem - and that you iPad has been returned to a fully functional state.

I hope that your continue to enjoy your iPad Pro 10.5.