As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EPSU BATTERY (12WL) TEST FAILED; BATTERY NEEDS TO BE REPLACE. AS NOTED ON LTPR NR# 5001245021-0010. EPSU BATTERY (12WL) FAILED ON EMERGENCY LIGHTING BATTERY S/N OFF: 285853 QTY:1EA P/N ON: AD3214-31 S/N ON: 242320 CAPACITY TEST AND REQUIRE REPLACEMENT. BATTERY REPLACEMENT OF QTY:1EA. WORK ACCOMPLISHED BY 5P1122 AND INSPECTED BY 5H0357. (12WL) PERFORMED IAW AMM: 33-51-38-000-002 REV 120 AND AMM:33-51 38-400-002 REV120. TEST SATISFACTORY. P/N OFF: AD-3214-31