As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BATTERY PACK M1675, LIGHTS SHUT OFF PRIOR TO 15 MINUTES MINIMUN (REF AAR NR 99976632). REMOVED AND INSTALLED NEW BATERY PACK 1675 IAW B737 AMM 33-51-06-960-805. OP CHECKS GOOD(SDR NO. 1033254)(WORK ACCOMPLISHED BY V936334 AND AAR QC A-83 V935067)