# Refuel mode

**Refuel Mode** is needed to refuel your wallets with native tokens in the networks you want to activate. This mode operates based on **L2Pass**, so all current transaction fees correspond to the fees in the **L2Pass** protocol itself;

**L2Pass** supports refueling in the following networks: **Moonriver, Moonbeam, Polygon, Avalanche, Arbitrum, Optimism, BNB, Fantom, Mantle, Kava, Linea, Base, CoreDAO, Arbitrum Nova, Gnosis, Scroll, Celo, Fuse, Klaytn, Aurora, opBNB, Canto, Harmony, OKX Chain**, and **Polygon zkEVM**;

The settings and network selection for session launches are very user-friendly. You can always visit the official **L2Pass**website to see the available networks for refueling and their fees.

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### Setting up and starting a session:

* In the **Mode** section, select **Refuel Mode**;
* In the **Run mode** section, choose the order in which the wallets will be launched:
  1. **Parallel** - parallel operation (multithreading) with or without proxies;
  2. **One-by-one** - wallets will be launched one after another with or without proxies;
  3. **One-by-one (mobile proxy)** - wallets will be launched one after another using mobile proxies. Mobile proxies must be added in the **Settings ->** [**Proxies**](https://docs.nfd.gg/main/eng-combine-software/section-settings/proxies) section and linked to accounts in [**Account Manager**](https://docs.nfd.gg/main/eng-combine-software/account-manager)**.**
* To use a preset configuration, click on the selection field in the **Select preset** section and choose the desired preset;
* To launch a pre-prepared group of wallets, select it in the **Select Accounts group to launch** section;
* In the **Account Delays** field, set the delays between wallets;
* In the **Chain from and to** field, select the networks: from which and to which the tokens will be sent.

<figure><img src="https://883793412-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwkJ3XgG3awYBhDsxkXtj%2Fuploads%2FQgy1XxgfqWYAJug9o9c4%2FC2121ombine.gif?alt=media&#x26;token=542fffbc-f715-4869-a884-0ed9ed7ac76b" alt=""><figcaption></figcaption></figure>

* Click **Update Balance** to get information about the current balances;
* In the **Select wallets to launch** section, choose the wallets you want to use;
* In the **Amount** field, there are two options for automatically filling in the sending amounts:
  1. **Send range** allows setting the sending amount within a range;
  2. **Leave range** allows keeping a specified range on the wallets and sending only what exceeds that range;
* Enter the required amount range in the **Min ETH** and **Max ETH** fields and click **Apply to selected wallets**. The number of tokens corresponding to Merkly's limits will automatically appear in these fields. These limits vary depending on the specific network and current Gwei;
* The amount that will be applied to the wallet can be seen in the **Amount to bridge** field, and this amount can be manually adjusted in the same field;
* If you want the wallets to start working in random order, leave the **Randomize wallets** checkbox checked;
* To start the session, click **Launch**.

<figure><img src="https://883793412-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwkJ3XgG3awYBhDsxkXtj%2Fuploads%2F4fzntxgFgZnycLVAAoaK%2FCo67676m61bine.gif?alt=media&#x26;token=124f240b-26d3-486d-b087-9215f377ea8d" alt=""><figcaption></figcaption></figure>

* Your wallets have been launched. You can track the process of work of your wallets in the section [Logs & Progress](https://docs.nfd.gg/main/eng-combine-software/modules/operation-and-launching-of-modules/layer-zero-module/logs-and-progress).