As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CAPACITY CHECK, BATTERY PACK PN 61-2275-1 SN/9911208 REMOVED FAILED CAPACITY CHECK 8/18/04 & 8/25/04. MAINTENANCE REPLACED BATTERY PACK ASSEMBLY 61-2274-1 UNIT PASSES CMM TESTS, RETURNED TO SERVICE 8/29/04. REFER TO WO NR 374107 FOR ADDITIONAL INFORMATION.