2032 Battery you need - https://amzn.to/3VGY9BX
If you have the keyless version, click here -    • Xhorse Aftermarket Key Fob Battery Re...  

Here is a quick and simple demonstration video on how to replace the dead / weak 2032 in your XHorse remote fob. All you need is a new 2032 battery and a very thin screwdriver. You will need to use that thin screwdriver to pry off the back cover as I've shown. Once you do that, go ahead and remove the circuit board. Push out the dead 2032 battery. The new battery goes in + side facing upward. Put the board back in and clip the cover back on. Press the lock button to make sure your red light flashes and you're all set! Hope you found the video helpful! Take care

Xhorse XKKF02EN Wire Remote Key Knife Flip 3 Buttons