As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS BATTERY: EMERGNCY LIGHT DO NOT WORK IN THE MORNING. AFTER RUNNNIG THE APU FOR 30 MINUTES THEY WORK. CORRECTIVE ACTION; REPLACED AFT LH, AFT RH, FWD LH ANO FWD RH EMERGENCY PATTERY PACKS !AW CE-700 AMM 33-50-05, 33-50-07, EMERGENCY LIGHTS OPERATIONAL TEST SATLSFACTORY !AW AMM33·50·00.