# 18. What is the purpose of the Batteries?

**Batteries** are optional items that allow you to extend your **Electricity charge** beyond the standard **free 24-hour period**.

Using Batteries is **not mandatory**, as you can recharge your Electricity daily without them.

For more details, check out our **blog**: 

[<mark style="color:green;">Free Recharge Is Coming Back! Electricity System Update. - RollerCoin Blog – Our News, Updates & Manuals</mark>](https://rollercoin.com/blog/electricity-update)


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