Hope this web page link helps, the battery holders (size and physical) I use (1 cells, 2 cells, 3 cells, and 4 cells) will mainly looks like this one in this web page link,
I’m not quite sure what are “bendable legs” terms refer to the part, but its no problem if the output wires is just wires like I marked in 1 and 2,
I’m curious, the output wires that I marked in 1 and 2, is it not as easy as looks like to deal with? because I still didnt start yet to learn how to make my fritzing parts by myself yet, waiting for wifi, 
I didnt want to bother you further,
Also, I already figure out how to add plus minus symbols to breadboard view using Breadboard Text in Core parts,
Ajie