As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS OUT AT ROWS 18 HG THROUGH 27 HG. TROUBLESHOOT AND REPLACED BATTERY PACK AT SEAT 19HG, OPERATION CHECK NORMAL. EMERGENCY LIGHTS OUT AT L2 EXIT DOOR. TROUBLESHOOT AND REPLACED BATTERY PACK AT L2 JUMP SEAT OPERATION CHECK NORMAL.