As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BATTERY PACK M1673, LIGHTS SHUT OFF PRIOR TO 15 MINUTES MINIMUN (REF AAR NR 99976629). REMOVED AND INSTALLED NEW BATTERY PACK M1673 IAW B737 AMM 33-51-06-960-805, OP CHECKS GOOD.(SDR NO. 1033251)(WORK ACCOMPLISHED BY V934989 AND AAR QC A-83 V935067).