Pencil's battery drains automatically even when it's attached to the iPad
I have been observing something weird happening with my Pencil.
Suppose my Pencil is at 50%. I attach it to my iPad at night. The Pencil starts charging once I attach it to the iPad. The next morning I wake up, the battery's full.
Now Suppose my Pencil is at 100%. I attach it to my iPad at night. It doesn't charge as its already full. The next morning I wake up, the Pencil has drained completely! Its at 0%! I tried to keep Bluetooth for a whole night. Still, the battery drains completely!
Is there any problem with my Pencil? Or am I doing something wrong? Please suggest me a solution to this problem and help me!
iPad Pro