As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:NA**SUPPLEMENTAL SDR ** DURING LT SYSTEM TEST, RECEIVED LEVEL 1 "EMER LT BAT 1 LO" ALERT. DEFERRED PER MEL 33-50-4 DMP C/W REF. M-702892REPLACED EMERGENCY LIGHTING BATTERY POWER SUPPLY AS PER AMM 33-51-01-401. POS CKS GOOD THIS CLEARS M 702982 PLACARD REMOVED. DMP 33-50-4. REVERSED ESR IPC REF 33-5-10-01-05.