U.S. SECURITIES AND EXCHANGE
                                   COMMISSION

                             Washington, D.C. 20549

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                                    FORM 8-K

                                 CURRENT REPORT
     PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

         Date of Report (Date of earliest event reported) April 2, 2007
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                                GREATBATCH, INC.
                                ----------------
             (Exact name of registrant as specified in its charter)

           Delaware                        1-16137                16-1531026
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(State or other jurisdiction of   (Commission File Number)      (IRS Employer
        incorporation)                                       Identification No.)


     9645 Wehrle Drive, Clarence, New York                          14031
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    (Address of principal executive offices)                      (Zip Code)


        Registrant's telephone number, including area code (716) 759-6901
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                                 Not Applicable
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          (Former name or former address, if changed since last report)

         Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

[ ] Written communications pursuant to Rule 425 under the Securities Act
    (17 CFR 230.425).

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act
    (17 CFR 240 14a-12).

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
    Exchange Act (17 CFR 240.14d-2(b)).

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
    Exchange Act (17 CFR 240.13e-4(c)).



Item 1.01         Entry into a Material Definitive Agreement.
                  -------------------------------------------

                  As previously reported, on March 27, 2007, Greatbatch, Inc.
                  (the "Company") entered into separate privately negotiated
                  agreements under which it will exchange approximately an
                  additional $67.8 million aggregate principal amount of its
                  outstanding 2 1/4% Convertible Subordinated Debentures due
                  2013 (the "Outstanding Debentures") for an equivalent
                  principal amount of the Company's previously announced new
                  series of 2 1/4% Convertible Subordinated Debentures due 2013
                  (the "Additional New Debentures"). On April 2, 2007,
                  Greatbatch completed the exchange of Outstanding Debentures
                  for Additional New Debentures. After completion of the
                  exchange, approximately $52.2 million in aggregate principal
                  amount of Outstanding Debentures remain outstanding.

                  The Company issued the Additional New Debentures pursuant to
                  an indenture, dated as of March 28, 2007, by and between the
                  Company and Manufacturers and Traders Trust Company, as
                  trustee, (the "2007 Indenture") as amended by the First
                  Supplemental Indenture thereto (the "First Supplemental
                  Indenture"). The Additional New Debentures bear interest at 2
                  1/4% per annum, with interest payable on June 15 and December
                  15 of each year, commencing June 15, 2007. The Additional New
                  Debentures mature on June 15, 2013. The Additional New
                  Debentures are unsecured indebtedness of the Company, and rank
                  pari passu in right of payment to the Outstanding Debentures
                  and junior in right of payment to the Company's senior
                  indebtedness, including its bank credit facility.

                  The Additional New Debentures will be convertible upon the
                  occurrence of certain conditions into shares of the Company's
                  common stock at an initial conversion price of approximately
                  $34.70 per share, which is equivalent to an initial conversion
                  ratio of approximately 28.8219 shares per $1,000 principal
                  amount of Additional New Debentures. The conversion price and
                  the conversion ratio will adjust automatically upon certain
                  changes to the Company's capitalization.

                  The Additional New Debentures are convertible at the option of
                  the holders at such time as: (i) the closing price of the
                  Company's common stock exceeds 150% of the conversion price of
                  the Additional New Debentures, initially $34.70, for 20 out of
                  30 consecutive trading days; (ii) the trading price per $1,000
                  principal amount of Additional New Debentures is less than 98%
                  of the product of (x) the closing sale price of common stock
                  for each day during any five consecutive trading day period
                  and (y) the conversion rate per $1,000 principal amount of
                  Additional New Debentures; (iii) the Additional New Debenture
                  has been called for redemption, at any time on or after the
                  date the notice of redemption has been given until the close
                  of business on the business day immediately preceding the
                  redemption date; (iv) the Company distributes to all holders
                  of common stock rights or warrants entitling them to purchase
                  additional shares of common stock at less than the average
                  closing price of common stock for the ten trading days
                  immediately preceding the announcement of the distribution;
                  (v) the Company distributes to all holders of common stock any
                  form of dividend which has a per share value exceeding 5% of
                  the price of the common stock on the day prior to such date of
                  distribution; (vi) the Company affects a consolidation,
                  merger, share exchange or sale of assets pursuant to which its
                  common stock is converted to cash or other property; (vii) the
                  period beginning 60 days prior to but excluding June 15, 2013;
                  and (viii) certain fundamental changes occur or are approved
                  by the Company's Board of Directors.



                  Conversions in connection with corporate transactions that
                  constitute a fundamental change require the Company to pay a
                  premium make-whole amount whereby the conversion ratio on the
                  Additional New Debentures may be increased by up to 8.2 shares
                  per $1,000 principal amount. The premium make-whole amount
                  will be paid in shares of common stock upon any such
                  conversion, subject to the net share settlement feature of the
                  Additional New Debentures described below.

                  The Additional New Debentures contain a net share settlement
                  feature, which requires the Company, unless it has made an
                  election under the 2007 Indenture, upon conversion of the
                  Additional New Debentures, to pay holders in cash for each
                  $1,000 principal amount of Additional New Debentures the
                  lesser of $1,000 and the conversion value of the Additional
                  New Debentures, unless the Company otherwise elects. Any
                  amounts in excess of $1,000 will be settled in shares of the
                  Company's common stock, or at the Company's option, cash.

                  The Additional New Debentures are redeemable by the Company at
                  any time on or after June 20, 2012, and prior to maturity, or
                  at the option of a holder upon the occurrence of certain
                  fundamental changes affecting the Company. The Additional New
                  Debentures do not contain the put option provisions of the
                  Outstanding Debentures which provide the holders a one-time
                  option to require the Company to repurchase the Outstanding
                  Debentures on June 15, 2010.

                  An event of default under the 2007 Indenture will occur if the
                  Company: (i) is delinquent in making certain payments due
                  under the Additional New Debentures; (ii) fails to deliver
                  certain required notices; (iii) fails to deliver all cash and
                  any shares of common stock upon conversion of the Additional
                  New Debentures; (iv) fails, following notices, to cure a
                  breach of a covenant under the Additional New Debentures or
                  the 2007 Indenture; or (v) commences or has commenced against
                  it any proceeding seeking liquidation, reorganization or other
                  relief under any bankruptcy, insolvency or similar law.

                  The holders of the Additional New Debentures are entitled to
                  the benefits of the registration rights agreement, dated as of
                  March 28, 2007 (the "2007 Registration Rights Agreement"),
                  entered into by the Company with the holders of new debentures
                  previously issued by the Company on March 28, 2007. Under the
                  2007 Registration Rights Agreement, the Company has agreed to
                  file a shelf registration statement with respect to the resale
                  of the Additional New Debentures and the Company common stock
                  issuable upon conversion thereof. The Company is obligated to
                  file this registration statement within 30 days of March 28,
                  2007 and to cause such registration statement to become
                  effective within 90 days of the closing of the transaction. In
                  the event that the Company fails to comply with its
                  obligations under the 2007 Registration Rights Agreement, the
                  Company is obligated to make additional payments to the
                  holders of the Additional New Debentures.



                  The form of exchange and purchase agreement and the 2007
                  Registration Rights Agreement were filed as exhibits to the
                  Company's Form 8-K on March 29, 2007. The First Supplemental
                  Indenture is included herewith and incorporated herein by
                  reference. The foregoing descriptions of such agreements are
                  for summary purposes only and are qualified in their entirety
                  by the full text of such agreements.

                  The Additional New Debentures and the common stock issuable
                  upon conversion of the Additional New Debentures will not be
                  registered under the Securities Act of 1933, as amended, or
                  the securities laws of any state and, unless so registered,
                  may not be offered or sold in the United States except
                  pursuant to an applicable exemption from the registration
                  requirement of the Securities Act and applicable state
                  securities laws.


Item 2.03         Creation of a Direct Financial Obligation or an Obligation
                  Under an Off-Balance Sheet Arrangement of a Registrant.
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                  See Item 1.01 above, which is incorporated by reference
                  herein.

Item 3.02         Unregistered Sales of Equity Securities.
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                  See Item 1.01 above, which is incorporated by reference
                  herein. The issuance of the Additional New Debentures is
                  exempt from registration under the Securities Act of 1933, as
                  amended, pursuant to Rule 506 promulgated thereunder.

Item 9.01         Financial Statements and Exhibits.
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                  (c) Exhibits

                  10.1     Form of Exchange and Purchase Agreement by and
                           between Greatbatch, Inc. and certain other parties
                           thereto (incorporated by reference to Exhibit 10.1 to
                           our Current Report on Form 8-K filed on March 29,
                           2007).

                  10.2     Form of Registration Rights Agreement by and between
                           Greatbatch, Inc. and certain other parties thereto
                           (incorporated by reference to Exhibit 10.2 to our
                           Current Report on Form 8-K filed on March 29, 2007).

                  10.3     First Supplemental Indenture, dated April 2, 2007, by
                           and between Greatbatch, Inc. and Manufacturers and
                           Traders Trust Company, as trustee.



                                   SIGNATURES

                  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, thereunto duly authorized.

                                                   GREATBATCH, INC.
Dated:  April 4, 2007
                                                   By: /s/ Thomas J. Mazza
                                                       -------------------
                                                       Thomas J. Mazza
                                                       Senior Vice President and
                                                       Chief Financial Officer






EXHIBIT     DESCRIPTION
NUMBER      -----------
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10.1        Form of Exchange and Purchase Agreement by and between Greatbatch,
            Inc. and certain other parties thereto (incorporated by reference to
            Exhibit 10.1 to our Current Report on Form 8-K filed on March 29,
            2007).

10.2        Form of Registration Rights Agreement by and between Greatbatch,
            Inc. and certain other parties thereto (incorporated by reference to
            Exhibit 10.2 to our Current Report on Form 8-K filed on March 29,
            2007).

10.3        First Supplemental Indenture, dated April 2, 2007, by and between
            Greatbatch, Inc. and Manufacturers and Traders Trust Company, as
            trustee.