UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 3) Ultralife Batteries, Inc. (Name of Issuer) COMMON STOCK, par value $.10 (Title of Class of Securities) 903899102 (CUSIP Number) Jerald A. Trannel 290 South County Farm Road, Third Floor Wheaton, Illinois 60187-4526 Telephone: (630) 588-7200 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) September 29, 2006 (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Section 240.13d-l(e), 240.13d-l(f) or 240.13d-l(g), check the following box. [ ] NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Section 240.13d-7(b) for other parties to whom copies are to be sent. The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). 2 Schedule 13D/A CUSIP No. 903899102 Page 2 of 7 Pages 1. Names of Reporting Person S.S. OR I.R.S. Identification No. of Above Persons Grace Brothers, Ltd. 2. Check the Appropriate Box if a Member of a Group (See instructions) (a) [ ] (b) [ ] 3. SEC Use Only 4. Source of Funds (See instructions) OO 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] 6. Citizenship or Place of Organization Illinois Limited Partnership 7 Sole Voting Power Number of 0 Shares 8 Shared Voting Power Beneficially 3,793,964 shares Owned by Each Reporting 9 Sole Dispositive Power Person 0 With 10 Shared Dispositive Power 3,793,964 shares 11. Aggregate Amount Beneficially Owned by Each Reporting Person 3,793,964 shares 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See instructions) [ ] 13. Percent of Class Represented by Amount in Row (11) 25.4% 14. Type of Reporting Person (See instructions) PN, 3 Schedule 13D/A CUSIP No. 903899102 Page 3 of 7 Pages 1. Names of Reporting Person S.S. OR I.R.S. Identification No. of Above Persons Bradford T. Whitmore 2. Check the Appropriate Box if a Member of a Group (See instructions) (a) [ ] (b) [ ] 3. SEC Use Only 4. Source of Funds (See instructions) OO 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] 6. Citizenship or Place of Organization United States 7 Sole Voting Power Number of 25,815 Shares Beneficially 8 Shared Voting Power Owned by 3,793,964 Each Reporting 9 Sole Dispositive Power Person 25,815 With 10 Shared Dispositive Power 3,793,964 11. Aggregate Amount Beneficially Owned by Each Reporting Person 3,819,779 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See instructions) [ ] 13. Percent of Class Represented by Amount in Row (11) 25.6% 14. Type of Reporting Person (See instructions) IN 4 Schedule 13D/A CUSIP No. 903899102 Page 4 of 7 Pages 1. Names of Reporting Person S.S. OR I.R.S. Identification No. of Above Persons Spurgeon Corporation 2. Check the Appropriate Box if a Member of a Group (See instructions) (a) [ ] (b) [ ] 3. SEC Use Only 4. Source of Funds (See instructions) OO 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] 6. Citizenship or Place of Organization Illinois Corporation 7 Sole Voting Power Number of 0 Shares Beneficially 8 Shared Voting Power Owned by 3,793,964 shares Each Reporting 9 Sole Dispositive Power Person 0 With 10 Shared Dispositive Power 3,793,964 shares 11. Aggregate Amount Beneficially Owned by Each Reporting Person 3,793,964 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See instructions) [ ] 13. Percent of Class Represented by Amount in Row (11) 25.4% 14. Type of Reporting Person (See instructions) CO 5 Page 5 of 7 Pages The undersigned, Grace Brothers, Ltd. ("Grace") hereby amends its Schedule 13D as filed on June 7, 2006 relating to the Common Stock of Ultralife Batteries, Inc. Unless otherwise indicated, all capitalized terms used herein but not defined herein shall have the same meaning as set forth in the Schedule 13D. Except as set forth herein, the Schedule 13D, as previously amended, remains unchanged. Item 5. Interest in Securities of the Issuer (a) As of the date of this filing, Grace beneficially owns 3,793,964 shares of Common Stock, representing approximately 25.4% of the outstanding shares of Common Stock. As general partner of Grace, Spurgeon may be deemed beneficial owner of 3,793,964 shares of Common Stock, or 25.4% of the outstanding shares of Common Stock, although they otherwise disclaim beneficial ownership. As general partner of Grace, Whitmore may be deemed beneficial owner of 3,793,964 shares of Common Stock, and 25,815 shares of Common Stock as direct beneficial owner, or 25.6% of the outstanding shares of Common Stock. (b) Grace: shared voting power (with Whitmore and Spurgeon) 3,793,964 Shares Whitmore: shared voting power (with Grace and Spurgeon) 3,793,964 Shares sole voting power 25,815 Shares Spurgeon: shared voting power (with Grace and Whitmore) 3,793,964 Shares (c) The transactions effected by the Filers since the most recent filing on September 28, 2006 of Schedule 13D set forth in Schedule A. 6 Page 6 of 7 Pages SIGNATURE After reasonable inquiry and to the best of its knowledge and belief, the undersigned certifies that the information set forth in this Statement with respect to it is true, complete and correct. Dated: October 10, 2006 Grace Brothers, Ltd. By: /s/ Bradford T. Whitmore Name: Bradford T. Whitmore Its: General Partner Bradford T. Whitmore By: /s/ Bradford T. Whitmore Name: Bradford T. Whitmore Spurgeon Corporation By: /s/ Jerald A. Trannel Name: Jerald A. Trannel Its: Vice President 7 Page 7 of 7 Pages SCHEDULE A TRADE ACTIVITY FOR ULTRALIFE BATTERIES, INC. EFFECTED BY GRACE BROTHERS, LTD. FROM SEPTEMBER 29, 2006 THROUGH OCTOBER 10, 2006. Amount of Price per Date Security Shares Share Purchased 9/29/2006 COMMON STOCK 200 9.22500 9/29/2006 COMMON STOCK 100 9.28000 9/29/2006 COMMON STOCK 2,000 9.29950 9/29/2006 COMMON STOCK 100 9.34000 9/29/2006 COMMON STOCK 1,600 9.35000 9/29/2006 COMMON STOCK 100 9.37000 9/29/2006 COMMON STOCK 400 9.39000 9/29/2006 COMMON STOCK 2,920 9.39897 9/29/2006 COMMON STOCK 4,900 9.40000 9/29/2006 COMMON STOCK 231 9.40866 9/29/2006 COMMON STOCK 100 9.41000 9/29/2006 COMMON STOCK 200 9.41500 9/29/2006 COMMON STOCK 1,649 9.42000 9/29/2006 COMMON STOCK 600 9.42500 9/29/2006 COMMON STOCK 2,999 9.43000 9/29/2006 COMMON STOCK 600 9.43167 9/29/2006 COMMON STOCK 4,300 9.44000 9/29/2006 COMMON STOCK 200 9.44500 9/29/2006 COMMON STOCK 3,700 9.45000 9/29/2006 COMMON STOCK 300 9.45667 9/29/2006 COMMON STOCK 903 9.45889 9/29/2006 COMMON STOCK 4,700 9.46000 9/29/2006 COMMON STOCK 3,500 9.46914 9/29/2006 COMMON STOCK 1,000 9.47000 9/29/2006 COMMON STOCK 1,300 9.50000 9/29/2006 COMMON STOCK 1,200 9.51000 9/29/2006 COMMON STOCK 200 9.52000 9/29/2006 COMMON STOCK 200 9.53000 9/29/2006 COMMON STOCK 200 9.54500 9/29/2006 COMMON STOCK 1,540 9.60000 9/29/2006 COMMON STOCK 1,200 9.60333 9/29/2006 COMMON STOCK 500 9.62000 9/29/2006 COMMON STOCK 1,400 9.63000 9/29/2006 COMMON STOCK 500 9.64000 9/29/2006 COMMON STOCK 400 9.64750 9/29/2006 COMMON STOCK 1,600 9.65000 9/29/2006 COMMON STOCK 308 9.66000 9/29/2006 COMMON STOCK 1,000 9.67000 9/29/2006 COMMON STOCK 600 9.67833 9/29/2006 COMMON STOCK 1,600 9.68000 9/29/2006 COMMON STOCK 1,400 9.68429 9/29/2006 COMMON STOCK 1,850 9.68973 9/29/2006 COMMON STOCK 1,200 9.69000 9/29/2006 COMMON STOCK 3,900 9.70000 9/29/2006 COMMON STOCK 6,737 9.71000 9/29/2006 COMMON STOCK 400 9.72000 9/29/2006 COMMON STOCK 100 9.73000 9/29/2006 COMMON STOCK 200 9.75000 9/29/2006 COMMON STOCK 100 9.78000 9/29/2006 COMMON STOCK 300 9.79000 9/29/2006 COMMON STOCK 261 9.81000 9/29/2006 COMMON STOCK 100 9.82000 9/29/2006 COMMON STOCK 600 9.83000 9/29/2006 COMMON STOCK 300 9.84000 9/29/2006 COMMON STOCK 100 9.85000 9/29/2006 COMMON STOCK 400 9.86000 9/29/2006 COMMON STOCK 689 9.86694 9/29/2006 COMMON STOCK 459 9.87782 9/29/2006 COMMON STOCK 200 9.89000 9/29/2006 COMMON STOCK 400 9.90000 9/29/2006 COMMON STOCK 100 9.91000 9/29/2006 COMMON STOCK 1,200 9.92000 9/29/2006 COMMON STOCK 799 9.93000 9/29/2006 COMMON STOCK 3,300 9.93182 9/29/2006 COMMON STOCK 300 9.94000 9/29/2006 COMMON STOCK 2,350 9.95000 9/29/2006 COMMON STOCK 3,319 9.98584 9/29/2006 COMMON STOCK 400 10.00000 9/29/2006 COMMON STOCK 500 10.03000 9/29/2006 COMMON STOCK 100 10.04000 9/29/2006 COMMON STOCK 1,000 10.05900 9/29/2006 COMMON STOCK 500 10.06000 9/29/2006 COMMON STOCK 600 10.07000 9/29/2006 COMMON STOCK 2,003 10.10950 9/29/2006 COMMON STOCK 1,635 10.11000 9/29/2006 COMMON STOCK 300 10.12000 9/29/2006 COMMON STOCK 500 10.13000 9/29/2006 COMMON STOCK 500 10.15000 9/29/2006 COMMON STOCK 700 10.17857 9/29/2006 COMMON STOCK 1,000 10.18000 9/29/2006 COMMON STOCK 900 10.19000 9/29/2006 COMMON STOCK 700 10.20000 9/29/2006 COMMON STOCK 300 10.21333 9/29/2006 COMMON STOCK 300 10.23000 9/29/2006 COMMON STOCK 100 10.24000 9/29/2006 COMMON STOCK 1,600 10.25000 9/29/2006 COMMON STOCK 1,500 10.26000 9/29/2006 COMMON STOCK 100 10.27000 9/29/2006 COMMON STOCK 200 10.28000 9/29/2006 COMMON STOCK 1,039 10.29000 9/29/2006 COMMON STOCK 3,202 10.30000 9/29/2006 COMMON STOCK 1,200 10.31000 9/29/2006 COMMON STOCK 1,000 10.32000 9/29/2006 COMMON STOCK 100 10.34000 9/29/2006 COMMON STOCK 4,300 10.34977 9/29/2006 COMMON STOCK 100 10.35000 9/29/2006 COMMON STOCK 4,302 10.36000 9/29/2006 COMMON STOCK 400 10.37000 9/29/2006 COMMON STOCK 3,800 10.38921 9/29/2006 COMMON STOCK 700 10.39000 9/29/2006 COMMON STOCK 1,400 10.39286 9/29/2006 COMMON STOCK 9,602 10.40000 9/29/2006 COMMON STOCK 200 10.41000 9/29/2006 COMMON STOCK 1,600 10.42000 9/29/2006 COMMON STOCK 1,100 10.43000 9/29/2006 COMMON STOCK 6,375 10.45000 9/29/2006 COMMON STOCK 1,100 10.45818 9/29/2006 COMMON STOCK 6,000 10.46000 9/29/2006 COMMON STOCK 1,000 10.46500 9/29/2006 COMMON STOCK 1,000 10.46900 9/29/2006 COMMON STOCK 500 10.47000 9/29/2006 COMMON STOCK 1,000 10.48000 9/29/2006 COMMON STOCK 4,000 10.50000 10/3/2006 COMMON STOCK 200 10.34000 10/3/2006 COMMON STOCK 1,100 10.35000 10/3/2006 COMMON STOCK 1,100 10.37000 10/3/2006 COMMON STOCK 1,328 10.39000 10/3/2006 COMMON STOCK 1,000 10.39800 10/3/2006 COMMON STOCK 7,715 10.40000 10/3/2006 COMMON STOCK 700 10.41000 10/3/2006 COMMON STOCK 3,900 10.42000 10/3/2006 COMMON STOCK 100 10.43000 10/3/2006 COMMON STOCK 100 10.44000 10/3/2006 COMMON STOCK 900 10.45000 10/3/2006 COMMON STOCK 1,000 10.46900 10/3/2006 COMMON STOCK 300 10.47000 10/3/2006 COMMON STOCK 3,164 10.48000 10/3/2006 COMMON STOCK 3,600 10.49000 10/3/2006 COMMON STOCK 4,600 10.50000 10/3/2006 COMMON STOCK 12,600 10.51000 10/3/2006 COMMON STOCK 925 10.55000 10/4/2006 COMMON STOCK 1,534 10.51000 10/4/2006 COMMON STOCK 103 10.52000 10/4/2006 COMMON STOCK 1,395 10.53000 10/4/2006 COMMON STOCK 4,376 10.54000 10/4/2006 COMMON STOCK 1,400 10.55000 10/4/2006 COMMON STOCK 1,000 10.56000 10/4/2006 COMMON STOCK 200 10.61000 10/4/2006 COMMON STOCK 300 10.62000 10/4/2006 COMMON STOCK 300 10.63000 10/4/2006 COMMON STOCK 100 10.64000 10/4/2006 COMMON STOCK 1,204 10.65000 10/4/2006 COMMON STOCK 500 10.66000 10/4/2006 COMMON STOCK 200 10.67000 10/4/2006 COMMON STOCK 500 10.68000