Exhibit 99.1


                    Greatbatch, Inc. Reports Record Quarterly
             Sales; Increases Sales and Earnings Guidance for 2005


    CLARENCE, N.Y.--(BUSINESS WIRE)--Aug. 9, 2005--Greatbatch, Inc.
(the "Company") (NYSE: GB) today reported its results for the second
quarter ended June 30, 2005.

    Business Summary

    --  As previously announced, the Company:

        --  Reported all-time record sales results of $63.5 million,
            led by strong sales of implantable medical components and
            commercial power sources.

        --  Changed the name of the Company to Greatbatch, Inc., from
            its former name of Wilson Greatbatch Technologies, Inc.

        --  Celebrated the grand opening of the world-class
            manufacturing facility in Tijuana, Mexico.

        --  Appointed Thomas J. Hook as President and Chief Operating
            Officer.

    --  Installation of the remaining assembly equipment at the
        Greatbatch Mexico facility is proceeding as planned, with
        completion expected in the fourth quarter of 2005.
        Consolidation plan finalized for move of Carson City
        operations to Tijuana. Expect to complete the move by the
        first quarter of 2006.

    --  Substantially completed the move of the medical battery
        manufacturing equipment to new Alden, NY facility in
        accordance with plan. Began moving the manufacturing equipment
        from the existing capacitor plant. Completion of the move
        expected by the end of the fourth quarter of 2005.

    --  The Company's existing $20 million Senior Secured Credit
        Facility was successfully replaced with a new three-year $50
        million revolving credit facility.

    Net sales totaled $63.5 million during the second quarter of 2005,
an increase of 20% from the second quarter of 2004. Net income totaled
$5.3 million and diluted earnings per share were $0.23; compared to
$4.7 million and $0.21 per diluted share in the prior year.
    Edward F. Voboril, Chairman and Chief Executive Officer commented,
"We are pleased to report our second consecutive record quarterly
sales results. The second quarter was positively impacted to a certain
extent by short-term increased ICD component demand from our CRM
customers due to various ICD-related field issues in the marketplace.
However, we continue to see increasing demand in the underlying CRM
and Commercial markets with strength across our entire customer base.
Demand for our products remains high, providing positive momentum
heading into the second half of the year."
    "We demonstrated increased operating leverage in the quarter from
the higher sales volume. We achieved earnings per share of $0.23,
inclusive of pre-tax costs of $4 million, or $0.11 per share after
tax, in other operating expenses associated with the facility moves
and other costs. The plant moves and consolidation efforts are
proceeding as planned and once these become fully implemented, we
expect further operational improvements," Voboril concluded.

    Sales Summary

    The following table summarizes the Company's sales by business
unit and major product line for the second quarters of 2005 and 2004
(in thousands):


Business Unit/Product Lines                  2005     2004       %
                                           2nd Qtr   2nd Qtr  Change
- --------------------------------------------------- -------- --------
Implantable Medical Components ("IMC"):
- --------------------------------------------------- -------- --------
       ICD Batteries                       $12,608  $10,119      +25%
- --------------------------------------------------- -------- --------
       Pacemaker & Other Batteries           6,315    5,361      +18%
- --------------------------------------------------- -------- --------
       ICD Capacitors                        5,954    6,239       -5%
- --------------------------------------------------- -------- --------
       Feedthroughs                         15,859   12,261      +29%
- --------------------------------------------------- -------- --------
       Enclosures                            6,019    5,142      +17%
- --------------------------------------------------- -------- --------
       Other Medical                         8,031    7,077      +13%
- ---------------------------------------------=====----=====------====
Total Implantable Medical Components        54,786   46,199      +19%
- --------------------------------------------------- -------- --------
Electrochem Commercial Power ("ECP")         8,738    6,743      +30%
- ---------------------------------------------=====----=====------====
    Total Sales                            $63,524  $52,942      +20%
- --------------------------------------------------- -------- --------


    The increase in IMC sales is attributable to strong underlying
market conditions combined with increased short-term ICD component
demand by CRM customers. The increase in ECP sales is primarily due to
increased sales and marketing efforts and higher demand for power
sources used in oil and gas, oceanographic and seismic markets.

    Profit & Loss Summary

    The following table summarizes selected information derived from
the condensed consolidated statements of operations for the second
quarters in 2005 and 2004 (in thousands):


                                             2005     2004      %
                                           2nd Qtr  2nd Qtr   Change
- --------------------------------------------------- -------- --------
Gross Profit                               $25,119  $23,818       +5%
- --------------------------------------------------- -------- --------
Gross Margin                                  39.5%    45.0%
- --------------------------------------------------- -------- --------

- --------------------------------------------------- -------- --------
SG&A Expenses                               $8,481   $6,389      +33%
- --------------------------------------------------- -------- --------
SG&A Expenses as % of Sales                   13.4%    12.1%
- --------------------------------------------------- -------- --------

- --------------------------------------------------- -------- --------
RD&E Expenses, net                          $3,657   $5,688      -36%
- --------------------------------------------------- -------- --------
RD&E Expenses, net as % of Sales               5.8%    10.7%
- --------------------------------------------------- -------- --------

- --------------------------------------------------- -------- --------
Other Operating Expense                     $4,001   $2,957      +35%
- --------------------------------------------------- -------- --------

- --------------------------------------------------- -------- --------
Operating Income                            $8,022   $7,708       +4%
- --------------------------------------------------- -------- --------
Operating Margin                              12.6%    14.6%
- --------------------------------------------------- -------- --------

- --------------------------------------------------- -------- --------
Effective Tax Rate                            30.0%    30.5%
- --------------------------------------------------- -------- --------


    Approximately 2.9 percentage points of the 5.5 percentage point
decrease in gross margin was due to excess capacity costs at the
Greatbatch Mexico plant and at the wet tantalum capacitor facility.
The balance of the decrease was due to lower medical selling prices,
increased incentive and profit sharing compensation as well as higher
platinum costs.
    The increase in SG&A expenses is primarily due to increased
incentive compensation and higher selling and marketing costs from the
planned expansion of the medical and commercial sales forces.
    The decrease in RD&E expenses is primarily due to increased
reimbursement on new product development projects and engineering cost
reduction measures.


    The other operating expense in the current quarter consists of:

    --  Tijuana, Alden and Carson City
         consolidations/relocations                     $1.8 million
    --  Discontinuation of a drug pump development
         agreement                                      $1.2 million
    --  Asset write-downs                               $1.0 million

    Outlook

    Considering the Company's second quarter performance and the
prevailing strength of the core Medical and Commercial segments, the
Company now expects 2005 sales to be in the range of $220 to $235
million, an increase of $10 million from the previous sales guidance
range. The Company is also increasing its earnings per share guidance
and is now anticipating 2005 earnings per share in the range of $0.20
to $0.34, inclusive of charges of $0.68 - $0.73 per share representing
costs for the Alden and Greatbatch Mexico startups, excess capacity,
restructuring charges, Carson City plant consolidation and various
asset write-offs. Capital spending in 2005 is expected to be in the
range of $30 to $35 million, unchanged from the Company's previous
guidance.
    Earnings per share guidance for 2005 excludes the effect of
expensing stock options. Consistent with the Securities and Exchange
Commission's announcement amending the compliance dates for Financial
Accounting Standards Board Statement ("FAS") 123R, the Company will
begin implementing FAS123R when it becomes effective, which is
currently anticipated to be the in first quarter of 2006.

    Conference Call

    Greatbatch will host a conference call scheduled today, Tuesday,
August 9, at 5:00 p.m. EDT, to discuss its quarterly results. The
conference call will be webcast live and is accessible through the
Company's website at www.greatbatch.com. An audio replay will also be
available beginning from 7:00 p.m. EDT on Tuesday, August 9, 2005
until 12:00 a.m. on Wednesday, August 17. To access the replay, dial
888-286-8010 (U.S.) or 617-801-6888 (International) and enter the
passcode 90120705.

    Forward-Looking Statements

    Some of the statements in this press release and other written and
oral statements made from time to time by the Company and its
representatives are "forward-looking statements" within the meaning of
Section 27A of the Securities Act of 1933, as amended, and section 21E
of the Securities Exchange Act of 1934, as amended, and involve a
number of risks and uncertainties. These statements can be identified
by terminology such as "may," "will," "should," "could," "expects,"
"intends," "plans," "anticipates," "believes," "estimates,"
"predicts," "potential" or "continue," or the negative of these terms
or other comparable terminology. These statements are based on the
Company's current expectations. The Company's actual results could
differ materially from those stated or implied in such forward-looking
statements. Risks and uncertainties that could cause actual results to
differ materially from those stated or implied by such forward-looking
statements include, among others, the following matters affecting the
Company: dependence upon a limited number of customers; customer
ordering patterns; product obsolescence; inability to market current
or future products; pricing pressure from customers; our ability to
timely and successfully implement our cost reduction initiatives;
reliance on third party suppliers for raw materials, products and
subcomponents; fluctuating operating results; inability to maintain
high quality standards for our products; challenges to our
intellectual property rights; product liability claims; inability to
successfully consummate and integrate acquisitions; unsuccessful
expansion into new markets; competition; inability to obtain licenses
to key technology; regulatory changes or consolidation in the
healthcare industry; and other risks and uncertainties described in
the Company's Annual Report on Form 10-K, including Exhibit 99.1
thereto, and in other periodic filings with the Securities and
Exchange Commission. The Company assumes no obligation to update
forward-looking information in this press release whether to reflect
changed assumptions, the occurrence of unanticipated events or changes
in future operating results, financial conditions or prospects, or
otherwise.

    About Greatbatch, Inc.

    Greatbatch, Inc. (NYSE: GB) is a leading developer and
manufacturer of critical components used in implantable medical
devices and other technically demanding applications. Additional
information about the Company is available at www.greatbatch.com.


                           GREATBATCH, INC.
            CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
                              (Unaudited)
                (In thousands except per share amounts)

                                    Three months       Six months
                                       ended              ended
                                      June 30,           June 30,
                                   2005     2004      2005      2004

Sales                           $63,524  $52,942  $119,882  $108,467
Cost of sales                    38,405   29,124    73,976    61,474
                                -------- -------- --------- ---------
     Gross profit                25,119   23,818    45,906    46,993
Selling, general and
 administrative expenses          8,481    6,389    15,247    13,314
Research, development and
 engineering costs, net           3,657    5,688     8,058    10,569
Amortization of intangible assets   958    1,076     1,916     1,851
Other operating expense, net      4,001    2,957     6,389     3,178
                                -------- -------- --------- ---------
     Operating income             8,022    7,708    14,296    18,081
Interest expense                  1,191    1,144     2,322     2,304
Interest income                    (652)    (245)   (1,227)     (558)
Other expense (income), net         (60)      (2)      (60)        -
                                -------- -------- --------- ---------
     Income before income taxes   7,543    6,811    13,261    16,335
Provision for income taxes        2,263    2,078     3,978     4,983
                                -------- -------- --------- ---------
     Net income                  $5,280   $4,733    $9,283   $11,352
                                ======== ======== ========= =========

Diluted earnings per share        $0.23    $0.21     $0.42     $0.50



                           GREATBATCH, INC.
                 CONDENSED CONSOLIDATED BALANCE SHEET
                              (Unaudited)
                            (In thousands)

ASSETS                                              June     December
                                                     30,        31,
                                                    2005       2004
Current assets:
  Cash and cash equivalents                        $83,036   $89,473
  Short-term investments                             5,107     2,759
  Accounts receivable, net                          35,515    24,288
  Inventories                                       33,672    34,027
  Refundable income taxes                            3,783     3,673
  Deferred income taxes                              3,622     3,622
  Prepaid expenses and other current assets          6,094     4,637
                                                  --------- ---------
          Total current assets                     170,829   162,479

Property, plant, and equipment, net                100,901    92,210
Intangible assets, net                              62,058    63,984
Goodwill                                           156,772   156,772
Other assets                                         4,496     4,493
                                                  --------- ---------
Total assets                                      $495,056  $479,938
                                                  ========= =========

LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
  Accounts payable                                  $7,850    $8,971
  Accrued expenses and other current liabilities    18,703    18,109
  Current portion of long-term debt                  1,001     1,000
                                                  --------- ---------
           Total current liabilities                27,554    28,080

Long-term debt, net of current portion                  58       652
Convertible subordinated notes                     170,000   170,000
Deferred income taxes                               28,955    25,029
                                                  --------- ---------
           Total liabilities                       226,567   223,761
                                                  --------- ---------

Stockholders' equity:
  Preferred stock                                        -         -
  Common stock                                          21        21
  Additional paid-in capital                       215,912   212,131
  Deferred stock-based compensation                 (1,579)     (833)
  Treasury stock, at cost                                -       (95)
  Retained earnings                                 54,254    44,971
  Accumulated other comprehensive loss                (119)      (18)
                                                  --------- ---------
           Total stockholders' equity              268,489   256,177
                                                  --------- ---------
Total liabilities and stockholders' equity        $495,056  $479,938
                                                  ========= =========




    CONTACT: Greatbatch, Inc.
             Investor Relations:
             Anthony W. Borowicz, 716-759-5809
             tborowicz@greatbatch.com