Other places you suggested may have 2 cell packs, they are quite common- however also having the matching exact connector might be a different story. If you can solder, no big deal, just reuse the old connector.
Edit / Correction :
Below link is for the incorrect AA pack, not the required AAA smaller sized pack.
Also note, many forum sponsor dealers might have them too. Example Marios https://www.mariostrains.com/i...emart_category_id=15