As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTING BATTERY RT FIN (12WL) ECAM FAILURE MESSAGE ON START OF BATTERY CAP TEST. NEEDS TO BE REPLACED BEFORE BATTERY CAP TEST CAN START AND CONTINUE. REMOVED EMERGENCY POWER SUPPLY BATTERY FROM RT POWER SUPPLY, IAW AMM 33-51-38-000-002-A AND INSTALLED NEW BATTERY, IAW AMM 33-51-38-400-002-A. POWER UP TEST GOOD.