As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMERG LIGHT: EMERGENCY LIGHTS ON CABIN ARE ALL ONE WHEN THE SWITCH IS IN THE ARMED POSITION. EMERGENCY BATTERIES ARE MOST LIKELY LOW. /// CORRECTIVE ACTION /// REMOVED AFT EMERGENCY BATTERY P/N 6450LS-00 S/N 001398 AND INSTALLED NEW EMERGENCY BATTERY P/N 7450LS-00 S/N 006172 REF. EMBRAER PHENOM 300 AMM 33-52-01. OPS CHECKS GOOD.