As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING EMERGENCY BATTERY CAPACITY CHECK LH AFT DOOR EXIT SIGN BATTERY FAILED. SRXR430X. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY BATTERY PACK AT POSITION M1673 AND PERFORMED INSTALLATION TEST OF M1673 BATTERY PACK IAW B737 AMM 33-51-06-960-802. OPS CHECK GOOD. SRXR430X.