As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN EMERGENCY LIGHTS ARE PLACED IN ARMED POSITION EMERGENCY EXIT LIGHTED SIGNS BEHIND SEAT 9, AND ABOVE LAVATORY SEAT DO NOT ILLUMINATE AS WELL AS SEAT LIGHT OVER LAVATORY SEAT. MX SUSPECTS BATTERY PACK FOUR TO BE NOT FUNCTIONING. //SIGNOFF// REMOVED #4 EMERGENCY BATTERY AND INSTALLED REPAIRED #4 EMERGENCY BATTERY. CHARGED BATTERY FOR 4SMIN AND OPS CHECKED GOOD. NO OTHER DEFECTS NOTED AT THIS TIME. IAW CE680 AMM CH. 33-50-10.