As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE THE EMERGENCY LIGHTS (WHILE IN THE ARM POSITION) PROCEEDED TO STAY ILLUMINATED AND THEN CONTINUOUSLY FLICKER. REMOVED AND REPLACED #1 FWD & #2 AFT EMERGENCY BATTERY REF EMS PHENOM 300 MM 33-52-01, OPS CHECKS GOOD AT THIS TIME NO DEFECTS NOTED