As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK THE EMERGENCY LIGHT ON PANEL 811XW WAS FOUND TO BE NOT WORKING. MAINTENANCE REMOVED AND REPLACED THE NUMBER 1 BATTERY POWER SUPPLY CHARGER IAW EMB 145 AMM 33-50-04-801-A. OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.