As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED CAPACITY CHECK, BATTERY PACK PN 61-2275-1 SN/9710074, FAILED CAPACITY CHECK, MAINTENANCE REPLACED BATTERY PACK ASSEMBLY PN 61-2274-1. UNIT PASSES ALL CMM TESTS. AIRCRAFT RETURNED TO SERVICE 8/19/04. REFER TO WO NR 374245 FOR ADDITIONAL INFORMATION.