MycotropicI changed the battery in my Lenovo TB-X505F which was a little bit challenging. The batter is like $12-$16 which isn't bad. Lots of the tiniest screws you've ever seen and you have to take them out of the battery bracket thingie in order to ease the old battery out.
I put the bracket back in immediately and it was gluey enough to capture the new battery. Two cables to unplug and another bracket that holds down the battery plug. That one pulls straight up but the other cable that covers the battery pulls out in the direction of the wire.
Plugging them back in is a PITA because the cable wouldn't quite lined up with the plug and it's a couple of mm wide so I can't actually see it. The guys who do this on YouTube have apparently done it a million times and I haven't so getting that tiny click sound was pretty awesome.
The power and sound switches aren't attached so they'll fall out anyway and I needed a loupe to get them back in place correctly.
Plugged it in to USB and got a charging message so I THINK that all is well. Clicked the back on and only ended up with one "extra" screw!