As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START FLIGHT ATTENDENT COMPLAINED OF STRONG ELECTRICAL SMOKE SMELL AROUND OVERWING EXITS. EMERGENCY AND FORWARD EXIT LIGHTS WOULD NOT STAY ON. FOUND BATTERY PACK HAD BURNT SMELL. REMOVED AND REPLACED EMERGENCY CEILING BATTERY PACK.