Import Variables from another active script

I want to permanently access the "battery" var and "batteryMax" to create a "BatteryLifebar" How do I access this var without "GameObject.Find....."? flashlight.js:

 var lightintensity : float = 100;
 public var battery;
 var time : float;
 var time2 : float;
 var flashingTime : float;
 var batteries : int = 0;
 public var batteryMax;
 
 var Sound_Battery_PickUp : AudioClip;
 var Sound_Flashlight_Toggle : AudioClip;
 var Sound_Flashlight_Reload : AudioClip;
 
 var batteries_text : GameObject;
 
 function Start () {
     battery = 100;
     batteryMax = 100;
 
 }
 function PickUp (energy : int) {
     batteries += energy;
     audio.clip = Sound_Battery_PickUp;
     audio.Play();
 }
 
 function Update () {
 
     batteries_text.guiText.text = "Batterien: " + batteries + "\nLadung: " + battery + "/" + batteryMax;
     if (Input.GetMouseButtonDown(2) && batteries > 0 && battery < batteryMax){
         lightintensity += 0.83*20;
         batteries -= 1;
         battery += 50;
         if (batteryMax < battery) {
             battery = batteryMax;
             lightintensity = batteryMax;
         }
         audio.clip = Sound_Flashlight_Reload;
         audio.Play();
     }
 
     Screen.showCursor = false;
     Screen.lockCursor = true;
     
     if (light.enabled == true && battery > 0) {
         time += Time.deltaTime;
         if (time >= 1){
             time = 0;
             battery  -= 1;
             lightintensity -= 0.83;
         }
 
         
         if (battery <= 15 && battery > 0) {
             time2 += Time.deltaTime*4;
             if(time2 >= flashingTime) {
                 time2 = 0;
                 flashingTime = Random.Range(0.1, 1.2);
                 if (light.intensity == 0.25) {
                     light.intensity = 0.0;
                 }
                 else {
                     light.intensity = 0.25;
                 }
             }
             
         }
         else {
             if (battery > 0) {
                 light.intensity = lightintensity/100;
             }
             else {
                 light.intensity = 0;
                 lightintensity = 0;
             }
         }
     }
     if (battery <= 0) {
         battery = 0;
         light.intensity = 0;
     }
 
     if(Input.GetMouseButtonDown(1)){
 
         if(light.enabled == true){ 
             light.enabled=false; 
         }
         else{ 
             light.enabled=true; 
         }
         audio.clip = Sound_Flashlight_Toggle;
         audio.Play();
 
     }
 
 }

batterybar.js

 var battery;
 var batteryMax;
 
 var batterybar : Texture2D;
 var background : Texture2D;
 
 function OnGUI () {
     GUI.DrawTexture(Rect(0,-10,batteryMax,30),background);
     GUI.BeginGroup(Rect(0,-10,battery,30));
     GUI.DrawTexture(Rect(0,-10,batteryMax,30),batterybar);
     GUI.EndGroup();
     
     if(battery < 0){
         battery = 0;
     }
     if(battery > batteryMax){
         battery = batteryMax;
     }
 }