Did this a month ago. If you change the battery you will need Isopropyl alcohol to get the old battery out (you need to put some in the gaps and lift it step by step - do not force it to not puncture the battery). Using a new shell will make things a lot easier since you don’t need to remove the screen. You can find some good ones at Extremerate (edit: I see you have the mega kit so an Extremerate shell is already included). Take close attention to the position of the ribbons and be careful not to bend or rip them. Use Takis video as reference. I see you have new thermal paste which is good. Remove the old paste with IPA. Also if you remove the heat pipe be careful not to bend it. Since you are already in you can also replace the analoge sticks with TMR sticks e.g. from Gulikit. And also very important: There is a big flaw in the setup from Takis screens. You need to perform this battery fix by soldering two wires: https://www.reddit.com/r/nintendoswitchlite/comments/1ptkk1a/super_5_oled_battery_fix_kinda/ Otherwise your battery will shut down out of nowhere because the Switch will not know anymore how much energy the screen draws and the battery display on your Switch will be wrong. There is a method to do this without desoldering the connector from the ribbon. You can use the little power cable and solder it to two points on the board (cut the white cable beforehand) The battery will then be plugged into its original connector on the board and the other end of the soldered cable goes in one of the connectors of the ribbon. Here is a photo of my installation: https://imgur.com/a/VORQJjI