As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. EMERGENCY EXIT LIGHTS IN THE CEILING ABOVE ROWS 23, 25, AND 27 ARE INOPERATIVE. REMOVED AND REPLACED BATTERY PACK (AALA201710259015) AND POWER SUPPLY MODULE AB5-3 ABOVE SEAT 20E PER AMM 33-60-98. OPERATIONAL CHECK GOOD.