Exhibit 32.1 SECTION 1350 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The undersigned hereby certifies, in accordance with 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, in his capacity as an officer of C&D Technologies, Inc. ("C&D"), to his knowledge, that the Quarterly Report of C&D on Form 10-Q for the period ended October 31, 2004, fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934 and the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of C&D. Date: December 10, 2004 /s/ Wade H. Roberts, Jr. ----------------- ----------------------------------- Wade H. Roberts, Jr. President and Chief Executive Officer (Principal Executive Officer) A signed original of this certification required by Section 906 has been provided to C&D Technologies, Inc. and will be retained by C&D Technologies, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.