What is the Molex 2 pin model number on the on the 9V battery terminal connector PRT=0091? Is it a Molex 5264?
No, it’s definitely not 5264…the pictures are kind of rough but it sure looks like a 2-pin Molex KK 254 to me
https://www.mattmillman.com/info/crimpconnectors/#kk100 Here’s a guide, it looks like the top right plastic one in this photo (2-pin)
This may not be the exact part number but it’s a functionally similar / physically identical part.
0022011022 Molex | Rectangular Connector Housings | DigiKey https://share.google/IoFkIq9AeW1U2tHnh