EXHIBIT 21 Exide Electronics Group, Inc. Subsidiaries of the Registrant 1. Exide Electronics Corporation, a Delaware corporation (100% owned by Exide Electronics Group, Inc.). 2. Exide Electronics International Corp., a Delaware corporation (100% owned by Exide Electronics Group, Inc.). 3. Exide Electronics Canada, Inc., a corporation incorporated under the laws of Ontario, Canada (100% owned by Exide Electronics International Corp.). 4. Exide Electronics S.A., a company organized under the laws of France (100% owned by Exide Electronics International Corp., except for certain qualifying shares held by directors or officers of Exide Electronics S.A.). 5. Exide Electronics International - GmbH, a company organized under the laws of Germany (100% owned by Exide Electronics International Corp.). 6. Exide Electronics B.V., a corporation incorporated under the laws of the Netherlands (100% owned by Exide Electronics International Corp.) (Inactive). 7. MPL Powerware Systems Limited, a corporation incorporated under the laws of the United Kingdom (100% owned by Exide Electronics International Corp.). 8. Exide Electronics International Sales Corp., a corporation organized under the laws of the United States Virgin Islands (100% owned by Exide Electronics Corporation). 9. Exide Electronics USA Holdings Corp., a Delaware corporation (100% owned by Exide Electronics Group, Inc.). 10. DataTrax Acquisition Corporation, a Delaware corporation (100% owned by Exide Electronics USA Holdings Corp.). 11. GS Electronics Limited, a corporation incorporated under the laws of the United Kingdom (100% owned by MPL Powerware Systems, Limited). 12. Compu-Power Controls, Inc., a corporation incorporated under the laws of British Columbia (100% owned by Exide Electronics Canada, Inc.). 13. Exide Electronics Acquisition, Inc., a Delaware corporation (100% owned by Exide Electronics Group, Inc.) (Inactive). 14. International Power Machines Corporation, a Delaware corporation (100% owned by Exide Electronics Corporation). 15. International Power Machines Canada Ltd., a corporation incorporated under the laws of Ontario, Canada (100% owned by International Power Machines Corporation). 16. IPM Pacific Limited, a corporation incorporated under the laws of Hong Kong (100% owned by International Power Machines Corporation). 17. International Power Machines De Mexico, S.A. DE C.V., a corporation incorporated under the laws of Mexico (100% owned by International Power Machines Corporation). 18. International Power Machines GmbH, a corporation incorporated under the laws of Germany (100% owned by International Power Machines Corporation). 19. Lortec Power Systems, Inc., an Ohio corporation (100% owned by International Power Machines Corporation) (inactive). 20. Lectro Products, Inc., a Delaware corporation (100% owned by Exide Electronics Group, Inc.)