As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERG EXIT SIGN/LIGHT: THE INTERIOR EMERGENCY LIGHTS CHECK NORMAL WITH BATTERY SWITCH ON. WHEN TURNING THE BATTERY SWITCH TO OFF AND EMER LIGHT SWITCH STILL ON, THE AFT EXIT SIGNS ARE EXTREMELY DIM. CORRECTIVE ACTION; REPLACED DEFECTIVE AFT EMERGENCY BATTERY PACK REF. CE-560XLS AMM 33-50-01. OPS CHECK GOOD.