As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDIS 620 33-50 3316 10MAY19 MEM FACT U LOGPAGES:2999948 DURING PREFLIGHT EMER LT TEST LEVEL 1. "EMER LT BAT 1 LO" ALERT DISPLAYED. FACT 10MAY19 19:42 MEM U ACCOMPISHED "EMERGENCY LIGHT TEST" AS PER AMM 24-34-00-5, TEST PASSED, OK FOR SERVICE.