Fits HP 91, 92, 97, 97S, HP Printer 82143A, or HP Cassette Drive 82161A.

See instructions at https://www.schwalvenberg.com/en/hp-41cx/115-hp-82033a-battery-pack-refurbishment

1 - No need to destroy an original to retrieve the shell

2 - I provided the circular separator to isolate the cells at the end

3 - The two Y shaped bits are meant for you to form Nickel strips into proper shaped contacts. I also had some good results using simple kitchen aluminum foil (but keeping the plastic bits inside for strength).