What's Inside a Microsoft Surface Precision Mouse

My Surface Precision Mouse has recently experienced a very poor battery performance that I can’t even switch scrolling behavior without plugged in the charging cable even at its full battery. Here are some photos of what is it looks like the inside of the Microsoft Surface Precision Mouse while I tore it down.

How to Tear Down Microsoft Surface Precision Mouse

Remove the top cover
To get inside the Surface Precision Mouse you need to pull the top cover of the mouse by starting from the left and right buttons.
NoteYou might need a heat gun to loosen the excessive adhesive (likely a permanent glue) under the cover or you will need to pull them very hard to get it separated.

ImportantDo it at your own risk!!! As a result, my Surface Precision Mouse right-click button become unstable after torn them apart.
Remove the 5 screws
There are five Torx screws underneath the mouse cover. Remove those screws to get into the circuit board and battery section.

Surface Precision Mouse Screw Locations
Disconnect the cable
Disconnect the connection cable between the circuit board and the top mouse cover board.

Surface Precision Mouse Scrolling Mechanism
Now the disassembling is done. Here is the main circuit board of the Microsoft Surface Precision Mouse
Surface Precision Mouse Circuit Board
The battery capacity is 2.31Wh (3.7V, 627 mAh) and it can be easily disconnected and removed.
Surface Precision Mouse Battery 2.31 Wh (3.7V, 627 mAh)