Do they make 2.54mm 2P Crimpable Micro JST Female connectors?
I've found this product listing on Amazon:

2.54mm spacing JST extension cable.

It resembles the connector you've shown only slightly, but may be the only option out there.

And to contest the above statement, one that looks more like your objective:

Another 2.54mm spacing JST cable

There may be others. I used "jst 2.54 mm 2 pin female cable" as the search terms specifically in Amazon, other sources may have similar results.

Firing up the old Google again, using the last set of search terms, I've found an eBay listing:

eBay product listing

with the source in china. The photo appears correct, although the listing is for two cables, one male, one female, there is a third photo with the circuit board mount type connector.

This particular listing calls them a 2.5 mm connector, close enough? Perhaps a translation error.