Do not let the + and - battery tabs touch.

Red arrow is indicating the B+ pads and the Black arrow points to the B- pads.

Install the ring shaped orange paper insulator under the plus tab. Put the disk shaped insulator in place and tape them down.

Trim the minus nickle tab to length first, I used a scissors. Hold the end of the MINUS tab away from the PLUS terminal and bend it. Bend the minus tab making a 90 degree above the PLUS terminal (battery top) but leave enough room for the PCBA and insulators, maybe 3/16ths inch above the battery edge.

Trim the plus nickle tab to length. Bend the plus tab now and leave enough room for the PCBA and insulators, maybe 3/16ths inch above the battery edge.

Shape (cut) each nickle tab to make contact to the protection PCBA pads. The nickle material I used was wider than the original so I trimmed the edges to meet the pads.