NickRedwoodCity wrote: ... The only fix I've found for my iPad is to manually turn BT off in settings (not just in Control Center which is temporary) and turn it back on when I use it. The annoyance is re-pairing the Apple Pencil, I have to remove it from the side of the iPad and re-attach it for it be recognized.
That's not re-pairing. You're just turning your Apple Pencil back on again and reconnecting, not re-pairing. I actually use this technique to keep my Apple Pencil charged. 1) When I finish using my Apple Pencil, I put it in it's charging spot on the side of the iPad and bring it up to 80% charge. 2) I take the Pencil off and use it (or my finger) to turn off Bluetooth in Settings, not simply temporarily disconnecting in the drop-down Control Panel. 3) I tap the screen with the Pencil confirming it's off. 4) I immediately turn Bluetooth back on again. 5) I tap the screen with the Pencil again confirming it is off. ... You can skip steps 3 and 5 as it always works.
If you don't do this, then your Pencil just goes to sleep after a period of not being moved, and the battery slowly drains. You can confirm this by looking at the battery level for your Apple Pencil in Settings or in the battery widget. If you pick up your Apple Pencil after not using it for five or ten minutes and tap on a desk or table, it'll wake up and display the battery level.
The Pencil battery will run down to zero over a few weeks if you don't Bluetooth-toggle it off this way.
I don't understand why this tip isn't more widely known. It's pretty simple and works without fail (as long as your Pencil and the iPad don't surreptitiously mate up in your bag ;-)
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Regarding the Bluetooth battery drain issue, it looks like we're just going to have to wait for Apple to fix it in the next iOS/iPadOS update.