As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: DURING ACCOMPLISHMENT OF WORK CARD IT WAS FOUND THE 3L DOOR LOWER EMERGENCY POWER ASSIST SYSTEM BACKUP BATTERY DISCHARGED. REMOVED AND REPLACED THE LOWER EMERGENCY POWER ASSIST SYSTEM BACKUP BATTERY PER AMM 52-12-24.