As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SERVICE ROUTINE, LT OVERWING EMERGENCY LIGHT AND 3RD CEILING PANEL EMERGENCY LIGHT DO NOT ILLUMINATE. MAINTENANCE REMOVED AND REPLACED NR 1 BATTERY AND BATTERY PACK FOR EMERGENCY LIGHT ON LT FWD OVERWING AND 3RD CEILING PANEL IAW EMB 145 AMM 33-50-11. OPS CHECK GOOD.