As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EPSU BATTERY (11WL) TEST FAILED; BATTERY NEEDS TO BE REPLACE. AS NOTED ON LTPR NR# 5001232930-0010. ESPU BATT.(11WL) FAILED ON EMER.LIGHTING BATT.CAPACITY TEST. BATT.REP.OF (11WL) PERFORMED IAW AMM:33-51-38-000/400-002 REV.119. TEST SATIFACTORY. P/N OFF:AD3214-31 S/N OFF:242320 QTY: 1EA P/N:AD3214-3 S/N ON: 273851 QTY:1EA.