As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND THE EMERGENCY FLOOR LIGHTS FROM ROW 12-18 FAILED AFTER A FEW SECONDS. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED BATTERY POWER SUPPLY NR 4 IAW EMB 145 AMM 33-50-04. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.