Company: RAYA
Filing Date: 2025-08-01
Form Type: 424B5
Source: 0001213900-25-070321
Chunk: 0

Company: Erayak Power Solution Group Inc.
Filing Date: 2025-08-01
Form: 424B5
Chunk 0
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Filed pursuant to Rule 424(b)(5)
Registration No. 333-278347

Prospectus Supplement

(To Prospectus dated May 16, 2024)

<div align='center'>32,155,921 Class A Ordinary Shares

Pre-Funded Warrants to Purchase up to 75,536,386 Class A Ordinary Shares

Up to 75,536,386 Class A Ordinary Shares issuable upon exercise of the Pre-Funded Warrants

Placement Agent Warrants to Purchase up to 6,461,538 Class A Ordinary Shares

Up to 6,461,538 Class A Ordinary Shares issuable upon exercise of the Placement Agent Warrants

ERAYAK Power Solution Group Inc.</div>

This is an offering of the securities of ERAYAK
Power Solution Group Inc. (the “Company”, “we”, “our”, “us”, “Erayak”), a
Cayman Islands exempted company with limited liability.

Our class A ordinary shares of par value of $0.0001 each (the “Class
A Ordinary Shares”) are listed on The Nasdaq Capital Market, or Nasdaq, under the symbol “RAYA.” On July 31, 2025, the
last reported sale price of our Class A Ordinary Shares on Nasdaq was US$0.059 per share.

This prospectus supplement and the accompanying base prospectus relates
to an offering of an aggregate of (i) 32,155,921 Class A Ordinary Shares (the “Shares”) of the Company and (ii) pre-funded
warrants (the “Pre-funded Warrants”) to purchase an aggregate of up to 75,536,386 Class A Ordinary Shares (such shares that
are issuable from time to time upon exercise of the Pre-funded Warrants (the “Pre-funded Warrant Shares”)), both (i) and (ii)
pursuant to a Securities Purchase Agreement, dated as of July 25, 2025, between the Company and the purchasers identified on the signature
pages thereto. The purchase price of each Share is $0.065. The purchase price of each Pre-Funded Warrant is $0.0649, which equals the
price per Share being sold to the public in this offering, minus an exercise price of $0.0001. The Pre-Funded Warrants will be exercisable
immediately after issuance and from time to time, in whole or in part, at an exercise price equal to $0