EXHIBIT 10.15 C&D TECHNOLOGIES, INC. 1400 Union Meeting Road Blue Bell, Pennsylvania 19422-0858 Mr. Wade H. Roberts, Jr. 1385 Eaves Spring Road Malvern, Pennsylvania 19355 As of September 28, 1998 Dear Mr. Roberts: At the time C&D TECHNOLOGIES, INC. (the "Company") pays its annual bonuses in respect of its current fiscal year, the Company will also pay you a signing bonus equal to the excess, if any, of $110,000 over the total of (a) the amount paid to you as an annual bonus by the Company in respect of its current fiscal year and (b) the amount, if any, paid or payable to you as an annual bonus by your present employer in respect of its current fiscal year. Very truly yours, C&D TECHNOLOGIES, INC. By: /s/ Alfred Weber Title:Chairman and CEO