As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND M5170 EMERGENCY POWER FUNCTION. IAW AMM 33-51-04-000-803 & 33-51-04-900-803 & 33-51-04-400-803 REV 48. REPLACED BATTERY ASSY (M5170) AT UPPER DECK AREA, THE CONDITION CHECK NORMAL IAW AMM 33-51-04-900-803 & 33-51-04-400-803 REV 48. PERFORMED INSTALLATION TEST OF BATTERY ASSY (M5170), THE RESULT WAS SATISFACTORY.