What was found
EMER LIGHTS STAY ON WHEN SWITCH IS OFF. EXTERIOR WING INSPECTION LIGHTS, PATH LIGHTS BELOW SEAT 5 AND 8, LIGHT ABOVE SEAT 7, AND LIGHT AT EMERGENCY EXIT. CORRECTIVE ACTION: GAINED ACCESS TO AIRCRAFT AND FOUND EMERGENCY LIGHTS ON. POWERED UP AIRCRAFT AND RESET EMERGENCY LIGHTSWITCH. NO FIX. GAINED ACCESS TO ALL EMERGENCY PACK G SWITCHES AND RESET SWITCHS. EMERGENCY BATTERY PACK #1 G SWICH WAS THE CULPRIT. ONCE RESET, LIGHTS WENT OFF. PERFORMED CHARGING OF BATTERY PACKS IN CASE ANY BATTERY PACKS WERE DRAINED. CHARGED ALL BATTERY PACKS AND PERFORMED OPS CHECKS OF BATTERY PACKS. OPS CHECKS GOOD. INFORMED MCC AND MCC OK TO SIGN OFF. WORK DONE IAW CE-680A AMM 33-50-00.