As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHT SYSTEM TEST FAULTING EMERGENCY POWER SUPPLY UNIT INT LOAD EMERGENCY RIGHT OFF WING. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT BATTERIES 10WL (AALA202108227337) AND 13WL (AALA202108238145) PER AMM 33-51-38-400-001-A OPERATIONS CHECK'S NORMAL, REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT POWER SUPPLY UNIT PER AMM 33-51-38-400-001-A.