As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT UPON ARRIVING AT THE AIRCRAFT, THE EMERGENCY LIGHTS HAD BEEN LEFT ON OVERNIGHT. MANY OF THE LIGHTS WERE DIM AND OTHER WERE INOPERATIVE. MAINTENANCE REPLACED ALL FOUR EMERGENCY BATTERIES. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.