As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMERGENCY LIGHTS OPERATIONAL CHECK. OPERATIONS CHECK FAILED. MULTIPLE ATTEMPTS ALL COME BACK WITH EPSU BATTERY FWD LT FAULT. SEE ATTACHED PHOTO. REPLACED BATTERY AT FWD LT AND MID RT LOCATIONS. EMERGENCY LIGHTS TEST PASSES, REF AMM 33-51-38.