What was found
DURING CIDS 1 EMERGENCY POWER SUPPLY UNIT SYSTEM TEST, EMERGENCY POWER SUPPLY UNIT (15WL) AT DOOR 3L FAILED ITS BATTERY BITE TEST. INSTALLED SERVICABLE EMERGENCY POWER SUPPLY UNIT (15WL) BATTERY IAW AMM 33-51-38
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CIDS 1 EMERGENCY POWER SUPPLY UNIT SYSTEM TEST, EMERGENCY POWER SUPPLY UNIT (15WL) AT DOOR 3L FAILED ITS BATTERY BITE TEST. INSTALLED SERVICABLE EMERGENCY POWER SUPPLY UNIT (15WL) BATTERY IAW AMM 33-51-38