As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CIDS FAULT EMERGENCY EQUIPMENT "EPSU UNIT FWD L ATA 33-51-38" TRIED EPSU NO HELP SUSPECT BATTERY,NIS DEN,PART ON AOG. REMOVED PANEL FOR ACCESS IAW AMM 25-23-42 PANEL IN G1 AREA, BATTERY PN 3214-31 M&E 18-3351-3-0001 ON ORDER. REPLACED FWD L AND OVERWING L BATTERIES REF AMM 33-51-38-400-002 -A. OPS CHECKED GOOD. ADD EMP:U019136 IDT INSPECTION OF EMERGENCY LIGHT TEST CKS OK.