UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K/A

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO SECTION 13A-16 OR 15D-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of April 2026

Commission file number: 001-41188

ADS-TEC Energy Public Limited Company

(Translation of registrant’s name into English)

10 Earlsfort Terrace

Dublin 2, D02 T380, Ireland

Telephone: +353 1 920 1000

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒          Form 40-F ☐

EXPLANATORY NOTE TO AMENDMENT

ADS-TEC ENERGY PLC (the “Company”) is amending its Report of Foreign Issuer on Form 6-K originally furnished to the U.S. Securities and Exchange Commission (the “SEC”) on April 13, 2026 (as amended “this 6-K”) solely for the purpose of providing the unaudited interim consolidated financial statements contained therein with the relevant Interactive Data Files in Inline XBRL format.

Incorporation by Reference

This 6-K and the accompanying exhibit is hereby incorporated by reference into the Company’s registration statements on Form F-3 (File No. 333-262281, 333-276788, 333-284850) and Form S-8 (File No. 333-263153), including all amendments thereto, filed with the SEC, to be a part thereof from the date on which this report is submitted, to the extent not superseded by documents or reports subsequently filed or furnished.

On April 13, 2026, ADS-TEC ENERGY PLC (the “Company”) issued a press release announcing its preliminary and unaudited condensed consolidated financial statements for the year ended December 31, 2025, and providing an update on its business and recent developments. A copy of that press release is furnished as Exhibit 99.1 to this Report of Foreign Private Issuer on Form 6-K (this “Form 6-K”) and is incorporated herein by reference.

This Form 6-K includes “forward-looking statements” within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. The Company’s actual results may differ from its expectations, estimates and projections and consequently, you should not rely on these forward-looking statements as predictions of future events. Words such as “expect,” “estimate,” “project,” “budget,” “forecast,” “anticipate,” “intend,” “plan,” “may,” “will,” “could,” “should,” “believe,” “hope,” “predict,” “potential,” “continue,” and similar expressions are intended to identify such forward-looking statements. These forward-looking statements include the Company’s expectations with respect to future performance and involve significant risks and uncertainties that could cause the actual results to differ materially from the expected results. Most of these factors are outside the Company’s control and are difficult to predict. The Company cautions readers not to place undue reliance upon any forward-looking statements, which speak only as of the date made. The Company does not undertake or accept any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements to reflect any change in its expectations or any change in events, conditions, or circumstances on which any such statement is based.

EXHIBIT INDEX

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.