> For the complete documentation index, see [llms.txt](https://docs.shopnext.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.shopnext.io/vietnamese/whitepaper/cach-tham-gia/the-nft-the-bonus-la-gi/recharge-the-nft-the-bonus.md).

# Recharge thẻ NFT (thẻ bonus)

<figure><img src="/files/lbZ5xRbVrFENsy3J0SSs" alt=""><figcaption></figcaption></figure>

Một thẻ mới mặc định sẽ có 100% Power. Sau mỗi lần giao dịch, Power của thẻ sẽ giảm dần tùy thuộc vào chỉ số Capacity của thẻ.

$$
PowerDecay=f(Capacity)
$$

$$
CurrentPower=100 - PowerDecay
$$

Chi phí recharge thẻ phụ thuộc vào mức Power hiện tại và số NEXT mà thẻ đã kiếm được. Để nạp 100% Power của bất kỳ thẻ nào, người dùng phải trả một lượng NEXT:

$$
RechargeFee (NEXT)=f(CurrentPower, ∑NFTCashback)
$$


---

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