Replacement CMOS RTC Battery for IBM T41 T43 T42p T43p T41p 02K6572 by PCRepair

so I have an IBM ThinkPad T 42 and problem with the CMOS battery have to replace it you'll see in a moment here comes up message it says check date and then it tells you you need to change the battery here so basically that's a process where you need to order a battery CMOS battery and I'll take you through that step by step now so I already ordered the battery it's in this little package here and with five dollar butter and I'm gonna install okay I've set up a little piece of paper here with some duct tape and I've rolled around the edges and taped it to the paper and now put all the screws on there this way they don't get lost and put all the screws in the proper order okay so what we'll need to do is remove all these screws here on this laptop and you'll see all there's little labels here where they indicate that it's for the screen in the keyboard all these types of screws need to b