What was found
DURING MAINTENANCE BASE VISIT THE RAMP REPORTED THE EMERGENCY LIGHTS WERE LEFT ON. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY POWER SUPPLY 1, 2, 3, 4 IAW EMB 145 AMM 33-50-04. SERIAL NUMBERS: 104946, 78789, 104936 AND 79756. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.