> For the complete documentation index, see [llms.txt](https://nuclear-industry.gitbook.io/nuclear-industry/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nuclear-industry.gitbook.io/nuclear-industry/battery.md).

# Battery🔋

<figure><img src="https://3072518766-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fm83hNrvn0CmLRSZjRTxX%2Fuploads%2F5VnHvFmnvA9h6l2H9shP%2FBattery.png?alt=media&amp;token=86d5f2a3-ad3a-4f4a-b698-441f8b2ec819" alt=""><figcaption></figcaption></figure>

At [Battery](/nuclear-industry/battery.md), you can store the NUC tokens you've earned, send the stored tokens to the [bank](/nuclear-industry/bank.md) in our city, and withdraw them to your wallet.

&#x20;                       **Upgrade Cost**                               **Battery Storage**

&#x20;                       **LVL 1**: ***0***       <mark style="color:red;">$NUC</mark>                                                                         ***15***   <mark style="color:red;">$NUC</mark>

&#x20;                       **LVL 2**: ***30***    <mark style="color:red;">$NUC</mark>                                                                      ***30***     <mark style="color:red;">$NUC</mark>&#x20;

&#x20;                       **LVL 3**: ***50***    <mark style="color:red;">$NUC</mark>                                                                     **50**      <mark style="color:red;">$NUC</mark>&#x20;

&#x20;                       **LVL 4**: ***70*** <mark style="color:red;">$NUC</mark>                                                                          ***70***      <mark style="color:red;">$NUC</mark>

&#x20;                      **LVL 5**: ***90***   <mark style="color:red;">$NUC</mark>                                                                         ***100***    <mark style="color:red;">$NUC</mark>&#x20;

&#x20;                       **LVL 6**: ***150***   <mark style="color:red;">$NUC</mark>                                                                       ***400*** <mark style="color:red;">$NUC</mark>