As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH THE BATTERIES IN THE OFF POSITION AND TESTING THE EMERGENCY LIGHTS, WHEN SELECTED TO THE ON POSITION NO ILLUMINATION OF ANY EMERGENCY LIGHTS. WHEN SELECTED TO THE ARM POSITION, BATTERY PACK NR 4 IS INOP. COMPLIED WITH NJA TC-FLT-33-1001-JIC. EMERGENCY LIGHTING POWER SUPPLY BATTERY EXERCISE PROCEDURE, OPS CHECKED GOOD.