As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY POWER SUPPLY ( M1673) AT STA 952 L/H INOP. / [01] REMOVED & REPLACED EMERGENCY POWER SUPPLY & BATTERY PACK (M1673) AT STA. 952 AND PERFORMED OPS CHECK EMERGENCY LIGHT TEST PASS AS PER B737 AMM 33-51-06-960-806 ;AMM 33-51-06-960-805;[02] VERIFIED 1.