# Refill

You can charge your Hero NFTs at the charging station to restore their energy. 

![](https://3657404676-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvnYoRrBwHIdpq9fMjdMA%2Fuploads%2Fp64WtmiPjT0NgyE6P3dG%2Fimage.png?alt=media\&token=3b5b0ff1-9afa-4c61-ac3c-9bb87b4c6e44)

Click the **\[+]** button of the charging station to select the hero that needs to be charged. 

Click **\[CONFIRM]** to charge. It takes a certain amount of time to charge, and the hero under charing will display the charging time required. 

<div align="left"><figure><img src="https://3657404676-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvnYoRrBwHIdpq9fMjdMA%2Fuploads%2FkWiPiPYAXAPBpnN7S8wu%2Frefill.png?alt=media&#x26;token=6923286c-1867-468b-bb09-b98c204eed15" alt=""><figcaption></figcaption></figure></div>

<div align="left"><img src="https://3657404676-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvnYoRrBwHIdpq9fMjdMA%2Fuploads%2FQiPbsKmwVkLP5PpUvVN2%2Frefill1.png?alt=media&#x26;token=59e7d990-8c21-4d27-8541-51f687973e01" alt=""></div>

**Batch Charging:**&#x20;

Heroes can be collected into batches for charging.&#x20;

**Batch Removal:**&#x20;

Remove all charging heroes.&#x20;

**Charging Slot Unlocked:**

Each player initially has 3 charging slots.

Each time a dungeon challenge is completed, an additional charging slot can be obtained, with 19 slots at maximum.VIP users can obtain 3 additional charging slots, with 22 in total.