As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PREFLIGHT, DURING EMERGENCY LIGHT TEST WE GOT A LEVEL ONE ALERT EMER LT BAT 1 LO. RELEASED FOR SERVICE PER MEL : 33-50-04 CATEGORY : C EXPIRATION : 15APR20 "MEL 33-50-04: EMER LIGHTS - INOP." PERFORMED THE OPERATIONAL TEST OF THE EMERGENCY LIGHTING BATTERY POWER SUPPLY FOR THREE TIMES REF AMM 33-51-01-5.TEST PASSED. STICKER REMOVED,A/C OK FOR SERVICE.