As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POWER SUPPLY - BATTERY PACK CAPACITY CHECK POWER SUPPLY BATTERY PACK CAPACITY CHECK - EMERGENCY POWER SUPPLY BATTERY PACK M1673 FAILED THE BATTERY PACK CAPACITY CHECK REPLACED POWER SUPPLY - BATTERY PACK PER AMM 33-51-06-960-802, OPS TEST GOOD