As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R4 DOOR BATTERY, EMER POWER ASST INOPERATIVE. R & R R4 DOOR BATTERY, EMER POWER ASST IAW MM 52 -11-20 & WC 25-0552-8-0090 & WPB 65854. ROTABLE PARTS CHANGE WAS INDICATED - TT 1596415, SN OFF 02054 BATTERY, EMER OFF 25-5211-9-9051 2054 & ON 25-5211-9-9051 1846.