As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF T/C 78233001 EMERGENCY LIGHTS AT AFT OVERWING EXIT, ISLE LIGHTS AT 19ABC, 22ABC, 26ABC AND OUTSIDE LH LOWER ARE INOP. GROUNDED - YES. REPLACED EMERGENCY BATTERY PACK AT M1670 PER B737-800 AMM 33-51-06-960-805 AND SSM 33-51-13 OPS CHECKED GOOD.