what is the connector type on the new battery? so i can buy the appropriate lead for nybble

The pin distance is 2.54mm. The head width is 5.7mm.

from checking it looks like a standard JST-XH connector.

Yes, this one should work:

https://www.pcboard.ca/jst-xh-2-pin

XH-2.54 2-Pin female connector

We will send you some connctors if you buy the new battery.