What was found
CABIN EMERG LIGHT: WITH MAIN BATTERIES OFF AND EMER LTS - ON, NO EMERGRNCY LIGHTS ILLUMINATE. WHEN SWITCH ITS MOVED TO ARM, EXIT SIGN ON AFT LAV DIVIDER (LEFT SIDE) REMAINS OFF. APPEARS TO BE FAILED BATTERY PACK(S). // SIGNOFF // REMOVED AND REPLACED #1, #2, #3 AND #4 EMERGENCY LIGHTING BATTERY PACKS IAW CE-68OA IAM LL-133-5O-O6. OPS CHECK GOOD.