As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CAPACITY INSPECTION IN MSP, EMERGENCY POWER SUPPLY P/N 501-1712-02, S/N 1464 REMOVED FOR SCHEDULED CAPACITY CHECK, CAPACITY CHECK FAILED. MAINTENANCE REPLACED BOTH CELL PACKS P/N 549-1324-06 & UNIT PASSES CMM CHECKS. RETURNED TO SERVICE 10/4/04.