Help: Music Man JP Piezo Battery Compartment

I’ve got a 2014 Music Man John Petrucci Piezo model. Looking for a replacement battery compartment (it takes a 9v battery on the back) since I managed to crack the one on my guitar. Been looking for part numbers and places to order. I live in India so very few (i.e. ZERO) places here that readily stock those parts. Any pointers welcome.
TIA
Ameya