As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EPSU BATTERY 13WL TEST FAILED, BATTERY NEEDS TO BE REPLACE. AS NOTED ON LTPR NR#5001232932-0010. ESPU BATT.(13WL) FAILED ON EMER.LIGHTING BATT.CAPACITY TEST. BATT.REP.OF (13WL) PERFORMED IAW AMM:33-51-38-000/400-002 REV.119. TEST SATIFACTORY. P/N OFF:AD3214-31 S/N OFF:261409 QTY 1EA P/N:AD3214-31 S/N ON: 242257 QTY:1EA.