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 POWER SUPPLY UNIT BATTERY MID LEFT FAILS TEST. **SUPPLEMENTAL REPORT FOR AALA202112105884: PERFORMED OPERATIONS CHECK ON MID LEFT EMERGENCY POWER SUPPLY UNIT BATTERY PER A321 AMM 33-51-00-710-006-A. OPERATIONS CHECK GOOD.** (CLOSED)