As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SERVICE CHECK FOUND SEVERAL EMERGENCY LIGHTS INOPERATIVE. TROUBLESHOT AND FOUND BATTERY PACK AT LOCATION 1675 FAULTY. REMOVED AND REPLACED BATTERIES AND POWER SUPPLY AS REQUIRED. OPS CHECKED NORMAL. WORK PERFORMED IAW B737 AMM 33-51.