As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L1 DOOR, INTERIOR/EXTERIOR EMERGENCY LIGHT INOP. GROUNDED - YES. PERFORMED EMERGENCY LIGHTING T/S TO ISOLATE THE FAULT IAW B737 FIM 33-50 TASK 801. FOUND SUPPLY BATTERY PACK (M01675)LH INOPERATIVE, REMOVED AND REPLACED BATTERY PACK (M01675)LH IAW B737 AMM 33-51-06-960-805 AND PERFORMED TEST OF THE BATTERY PACK IAW B737 AMM 33-51-06-960-805 OPS TEST GOOD.