As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 EPSU BATTERY 13WL FAILED TEST. INSTALLED NEW EPSU BATTERY IAW AMM 33-51-38-400-001-A. EPSU BITE CHECK GOOD IAW AMM 33-51-00-710-001. CIDS POWER UP TEST GOOD IAW AMM 23-73-00-740-005. EPSU TEACH IN PROCEDURES GOOD IAW AMM 33-51-00-820-801. EPSU FIN CHANGED WAS 13WL. AC OK FOR SERVICE.