As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: EPSU BATTERY AT 12WL AND 13WL HAVE NO CHARGE; REMOVED AND REPLACED EPSU BATTERIES 12WL AND 13WL AND PERFORMED OPERATIONAL CHECK IAW A321 AMM 33-51-38-000-001, 33-51-38-400-001, AND 33-51-38-710-001. OPS CHECK GOOD.