Need help with a script to Pick up Batteries for a Flashlight type Lighter

I want the Player to be able to press "e" and pick up Lighter Fuel to expand the Lifespan of the Light. I have everything mostly set up, however I can't seem to get the Player to pick up the Fuel (even if it's On Collide only) The fuel Object doesn't do anything ingame Here is the script for the Lighter, it is attatched to the First Person Controller. The First Person Controller is tagged as "Player", it seems to work as it should.

 using UnityEngine;
 using System.Collections;
 
 [RequireComponent(typeof(AudioSource))]
 public class MatchesController : MonoBehaviour
 {
     public Light light;
     public float PowerLevel = 1500.0f; //Fuel for Lighter
     public AudioClip clickSound;
     public AudioClip clickSound2;
 
 
     
     void Start ()
     {
         light.enabled = false; //Disables the Light by default
     }
     
     void Update ()
     {
         if(Input.GetKeyDown(KeyCode.F)) //If the F key is pushed
         {
             
             if(light.enabled == false){  //Check if the Light is disabled, if it is, enable it and play a sound
                 light.enabled = true;
                 audio.PlayOneShot(clickSound);
 
         }
         else                         //Else, disable to light and play another sound
         {
             light.enabled = false;
                 audio.PlayOneShot(clickSound2);
             
         }
     }
 
         if(light.enabled == true) { //decrease the Powerlevel if the light is on
             PowerLevel -= 1.0f;
             }
 
             if (PowerLevel <= 500) {              // decrease the light intensity if the PowerLevel falls beneath 500
                  light.intensity -= 0.0015f;
             }
 
         if (PowerLevel >= 501) {      //if the Powerlevel is higher than 500, restore Intensity.
             light.intensity = 0.8f;
 
         }
 
 
 
 
 
 
 
             
 
 
         if (PowerLevel <= 0) {                      //If the Powerlevel reaches Zero, disable the light and
         
                         light.enabled = false;      //set the PowerLevel to Zero
             PowerLevel = 0;
 
                 }
 
 
 
 
 
 
 
         }
         }
 
 
 

here is the script for The Fuel Object made by Olgo and modified so it works for my game, there is no press "e" option in here yet. It si atatched to the game object I want to use as the fuel that you can pick up for a lighter

 using UnityEngine;
 using System.Collections;
 
 [RequireComponent(typeof(SphereCollider))] 
 public class Battery : MonoBehaviour {
     
     void Start(){
         //get the Sphere Collider component of this Battery and make it a trigger.
         this.GetComponent<SphereCollider>().isTrigger = true;
     }
     
     //This function will run whenever another object with a collider encounters this object's collider.
     void OnTriggerEnter(Collider other){
         
         //Check to see of the GameObject that collides with this Battery is tagged as Player
         //For this to work, you will need to set your controllable GameObject to Player
         if(other.gameObject.tag == "Player") {
             
 
 
                 
                 other.GetComponent<MatchesController>().PowerLevel += 510.0f; //increase the Powerlevel by 510
         
         }     
     }
 }

I have tried a couple of hours now and I can't seem to find the error. I'm thankful for every help :)