Explanation:
This is a Samsung tablet from 2014, currently has LineageOS 18.1 (Android 11), the last it can get. Since it's unused I did a little experiment until I find someone who will use it. Today I have found so here is the post.
After charging it to 100%, I disabled Wi-Fi connection, put it on battery saving mode and it's been on for more than 2 months. Battery is still in good condition after all these years I guess. :)
Reminds me of how I recently found an old android tablet/e-reader combo I found the other day. It is from 2010 and runs a rooted Android 2.2. The battery doesn't seem to work at all, but it does turn on and fully work. The touch screen isn't even capacitive. I connected it to a public wifi and it works, but no site will load via the browser. I'm not sure what to do with it, but having a functional e-reader will be nice.