What was found
EMERGENCY LIGHTING: REPEAT WRITE UP. WITH THE EMERGENCY LIGHTS SWITCH IN THE OFF POSITION AND BOTH AIRCRAFT BATTERY SWITCHES OFF, THE FOLLOWIMG EMER LIGHTS ARE STILL ON: AFT AISLE EMER LIGHT, AFT CABIN EMER EXIT SIGN, LAVATORY EXIT SIGN, AND AFT EXTERIOR OVERWING EMERGENCY LIGHT. // SIGNOFF// INSPECTED SYSTEM AND RESET AFT G SWITCH. PERFORMED BATTERY CHARGING PROCEDURE AND ALL BATTERIES PASSED OPS CHECKED PER MCC REMOVED NO. 4 BATTERY PACK AND INSTALLEDAN REPAIRED UNIT PERFORMED BATTERY CHARGING PROCEDURE AGAIN. ALL OPS CHECK GOOD IAW CE-680 AMM 33-50-00 NO FURTHER DISCREPANCIES NOTED. INSPECTED AFT G SWITCH AND OPS CHECKS GOOD PER CE-680 AMM 33-50-00 ALL OPS CHECKS GOOD