As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTING: EMER LIGHTS ASSOCIATED WITH THE #3 BATTERY PACK FAIL TO ILLUMINATE DURING TEST FOLLOWING 30MINS OF CHARGING PER QRH PROCEDURE TAB AB6 REMOVED #3 EMERGENCY LIGHTING BATTERY PACK P/N: CBS28-1 S/N: 007120. REPLACED BY A REPAIRED EMERGENCY LIGHTING BATTERY PACK P/N: CBS28-1 S/N: 007271 PROVIDED BY ALL WORK DONE IAW CE-680A AMM 33-50-06.