As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: ON PTP PANEL 110RH EMERGENCY LIGHT SYSTEM TEST RETURNED: ATA 33-51-38 "EPSU BATTERY EXIT L" AND "EPSU ATTERY EXIT R" FAULT MESSAGE. REPLACED THE BATTERIES FOR EMERGENCY POWER SUPPLY UNIT 11WL (AALA202507082534) AND 12WL (AALA202507083117) PER AMM 33-51-38. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO FAULTS NOTED.