As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: EMERGENCY LIGHT CHECK FAILED EMERGENCY POWER SUPPLY UNIT MID LEFT AND RIGHT (NUMBER 2 DOOR) BATTERY FAULT. PERFORMED OPERATIONAL TEST OF EMERGENCY POWER SUPPLY UNIT PER AAL A321 AMM 35-51-00-710-001. OPERATIONS TEST CHECKS GOOD. NO FAULT FOUND.