what is the type of cmos battery for blade 15 advanced 2020?

I need a new CMOS battery to save my laptop, because my laptop now has the wrong bootup time, and it bootup is very slow, its keyboard light will show several times, then the razer logo will appear repeatedly, and then it will wait for around 3 minutes before it truly turning on. now I just need to know the cmos battery model, then I can fix the problem by myself.