As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: LEFT NUMBER 3 OVER WING DOOR EMERGENCY POWER ASSIST SYSTEM BACKUP BATTERY RED LIGHT FAILS TO ILLUMINATE DURING OPERATIONAL CHECK. REMOVED AND REPLACED EMERGENCY POWER ASSIST BATTERY (PED3) PER AMM 52-12-19-000-802.