As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL CABIN EMERGENCY LIGHTS ON POWER SUPPLY, 3351PS2, COME ON FOR ONE OR TWO SECONDS AND THEN SHUTOFF. ALL OTHER EMERGENCY LIGHTS FUNCTION NORMAL. SLAVED IN POWER SUPPLY BASE AND EMERGENCY LIGHTS CONTROL BOX. NO FIX. R & R BATTERY IAW MM 33-51-00. OPS CHECKED GOOD.