As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY POWER PACK,M1676,FAILS EMERGENCY LIGHTING FUNCTIONAL C HECK. BATTERY DISCHARGES IN LESS THAN 10 MIN.(REF AAR NR 1000129 24) REMOVED AND REPLACED BATTERY PACK AT M1676, IAW B737 AMM 33-51-0 6-960-805, TEST GOOD (WORK ACCOMPLISHED BY V937352 AND AAR QC V8 95387)