Flashlight Battery Error No definition

Sorry to come back so soon, but I tried coding a simple battery script to my flash light and I’m sorta stuck. I usually code java but this amazing flashlight script is in C#, so that’s what I’ve been using. I’m stuck as to how I can fix this error with my two scripts and any help in the right direction is appreciated. Sorry I’m really new to C# so thank you all !

Error
Assets/Scripts/Flashlight/Battery.cs(11,28): error CS0117: Flashlight' does not contain a definition for batteryPercentage’

Flashlight.cs

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(Light), typeof(AudioSource))]
public class Flashlight : MonoBehaviour {
	public AudioClip clickSound;
	public float batteryLifeInSec = 300f;
	public float batteryPercentage = 100;
	
	private bool on;
	private float timer;
	
	void Update() {
		Light lite = GetComponent<Light>();
		timer += Time.deltaTime;
		
		if(Input.GetKeyDown(KeyCode.F) && timer >= 0.3f && batteryPercentage > 0) {
			on = !on;
			audio.PlayOneShot(clickSound);
			timer = 0;
		}
		
		if(on) {
			lite.enabled = true;
			batteryPercentage -= Time.deltaTime * (100 / batteryLifeInSec);
		}
		else {
			lite.enabled = false;
		}
		
		batteryPercentage = Mathf.Clamp(batteryPercentage, 0, 100);
		
		if(batteryPercentage == 0) {
			lite.intensity = Mathf.Lerp(lite.intensity, 0, Time.deltaTime * 2);
		}
		
		if(batteryPercentage > 0 && batteryPercentage < 25) {
			lite.intensity = Mathf.Lerp(lite.intensity, 0.5f, Time.deltaTime);
		}
		
		if(batteryPercentage > 25 && batteryPercentage < 75) {
			lite.intensity = Mathf.Lerp(lite.intensity, 0.8f, Time.deltaTime);
		}
		
		if(batteryPercentage > 75 && batteryPercentage <= 100) {
			lite.intensity = Mathf.Lerp(lite.intensity, 1, Time.deltaTime);
		}
	}
}

Battery.cs

using UnityEngine;
using System.Collections;

public class Battery : MonoBehaviour {
	//Put this script on the pickup
	
	public int batteryPower = 10; //The amount of battery power to give, negative value hogs energy instead
	
	void  OnTriggerEnter ( Collider other  ){
		if (!other.CompareTag("Player")) return;
		Flashlight.batteryPercentage(batteryPower);
		Destroy (gameObject);
	}
}

You need to reference the script you are using first, like below:

Flashlight fLight = other.GetComponent<Flashlight>(); //Assuming that "other" has the flashlight as a script on its gameobject
fLight.batteryPercentage += batteryPower;