As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS FAIL TEST (INOP LIGHTS ROWS 16-23 LEFT AND 11-13 RIGHT INOP)<[01] PERFORMED TROBLESHOOT EMERGENCY LIGHT; FOUND BAD TWO BATTERIES PACK'S M1669 AND M1673. REPLACED BATTERY PACKS M1669 AND M1673 OP CHECK GOOD PER AMM 33-51-06-960-805 STEP E.