As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LINE CHECK, FOUND EMERGENCY LIGHTS IN GALLEY AREA AND COACH CABIN AREA ILLUMINATING. ALSO FOUND SYSTEM CIRCUIT BREAKER POPPED. MAINTENANCE LOOKED FOR A SHORT AND/OR DAMAGED WIRE, NONE FOUND. REPLACED THE BATTERY PACK. OPERATIONAL CHECK NORMAL.