As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING T.C. #78233001, EMERGENCY LIGHT BATT PACKS REQUIRE REPLACEMENT X3. GROUNDED - YES. REMOVED AND REPLACED BATT PACK AND CHARGER AT M1670, M1695, AND M1675 IAW AMM 33-51-06-960-805/806. NEW UNITS FROM STOCK CHECK GOOD. ALL EMERGENCY LTS ILLUMINATE NORMALLY AS REQ'D.