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 BATTERY WEAK/LIGHTS ON EMERGENCY LIGHT STRIPS BY ROWS 8-10 GO OUT AFTER SHORT TIME WITH EMERGENCY LIGHTS TURNED ON. THE AIRCRAFT WAS REMOVED FROM SERVICE. REMOVED AND REPLACED THE BATTERY. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.