Disculpe,
¿tiene
pilas
doble
A?
No
las
encuentro.
dees-KOOL-peh, tee-EH-neh PEE-lahs DOH-bleh AH? noh lahs ehn-KWEHN-troh.
Excuse me, do you have AA batteries? I can't find them.
"¿Tiene...?" is the go-to way to ask if a store carries something. It literally means "Do you have...?"