

    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 4.0b -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: http://www.novaworks.co -->
    <!-- Field: Doc-Info; Name: Source; Value: J:\Edgar\10%2DQ\2014\Q1\ulbi14_q1.xfr; Date: 2014%2D05%2D09T20:24:05 -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x80030000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef roleURI="http://ultralifecorporation.com/role/DocumentAndEntityInformation" xlink:href="ulbi-20140330.xsd#DocumentAndEntityInformation" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/BalanceSheets" xlink:href="ulbi-20140330.xsd#BalanceSheets" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/BalanceSheetsParenthetical" xlink:href="ulbi-20140330.xsd#BalanceSheetsParenthetical" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/StatementsOfOperationsAndComprehensiveLossIncome" xlink:href="ulbi-20140330.xsd#StatementsOfOperationsAndComprehensiveLossIncome" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/StatementsOfCashFlows" xlink:href="ulbi-20140330.xsd#StatementsOfCashFlows" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note1.BasisOfPresentation" xlink:href="ulbi-20140330.xsd#Note1.BasisOfPresentation" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note2.SubsequentEvents" xlink:href="ulbi-20140330.xsd#Note2.SubsequentEvents" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note3.Inventories" xlink:href="ulbi-20140330.xsd#Note3.Inventories" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note4.PropertyEquipmentAndImprovements" xlink:href="ulbi-20140330.xsd#Note4.PropertyEquipmentAndImprovements" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note5.GoodwillIntangibleAssetsAndLongTermAssets" xlink:href="ulbi-20140330.xsd#Note5.GoodwillIntangibleAssetsAndLongTermAssets" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note6RevolvingCreditAgreement" xlink:href="ulbi-20140330.xsd#Note6RevolvingCreditAgreement" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note7ShareholdersEquity" xlink:href="ulbi-20140330.xsd#Note7ShareholdersEquity" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note8IncomeTaxes" xlink:href="ulbi-20140330.xsd#Note8IncomeTaxes" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note9EarningsPerShare" xlink:href="ulbi-20140330.xsd#Note9EarningsPerShare" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note10CommitmentsAndContingencies" xlink:href="ulbi-20140330.xsd#Note10CommitmentsAndContingencies" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note11BusinessSegmentInformation" xlink:href="ulbi-20140330.xsd#Note11BusinessSegmentInformation" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note12FairValueOfFinancialInstruments" xlink:href="ulbi-20140330.xsd#Note12FairValueOfFinancialInstruments" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note13FireAtManufacturingFacility" xlink:href="ulbi-20140330.xsd#Note13FireAtManufacturingFacility" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note14RecentAccountingPronouncementsAndDevelopments" xlink:href="ulbi-20140330.xsd#Note14RecentAccountingPronouncementsAndDevelopments" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note3.InventoriesTables" xlink:href="ulbi-20140330.xsd#Note3.InventoriesTables" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note4.PropertyEquipmentAndImprovementsTables" xlink:href="ulbi-20140330.xsd#Note4.PropertyEquipmentAndImprovementsTables" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note5.GoodwillIntangibleAssetsAndLongTermAssetsTables" xlink:href="ulbi-20140330.xsd#Note5.GoodwillIntangibleAssetsAndLongTermAssetsTables" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note7ShareholdersEquityTables" xlink:href="ulbi-20140330.xsd#Note7ShareholdersEquityTables" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note8IncomeTaxesTables" xlink:href="ulbi-20140330.xsd#Note8IncomeTaxesTables" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note10CommitmentsAndContingenciesTables" xlink:href="ulbi-20140330.xsd#Note10CommitmentsAndContingenciesTables" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note11BusinessSegmentInformationTables" xlink:href="ulbi-20140330.xsd#Note11BusinessSegmentInformationTables" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note2SubsequentEventsDetailNarrative" xlink:href="ulbi-20140330.xsd#Note2SubsequentEventsDetailNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note3.InventoriesDetail" xlink:href="ulbi-20140330.xsd#Note3.InventoriesDetail" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note4.PropertyEquipmentAndImprovementsDetail" xlink:href="ulbi-20140330.xsd#Note4.PropertyEquipmentAndImprovementsDetail" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note4PropertyEquipmentAndImprovementsDetailNarrative" xlink:href="ulbi-20140330.xsd#Note4PropertyEquipmentAndImprovementsDetailNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note5GoodwillIntangibleAssetsAndLongTermAssetsGoodwillActivityDetail" xlink:href="ulbi-20140330.xsd#Note5GoodwillIntangibleAssetsAndLongTermAssetsGoodwillActivityDetail" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note5GoodwillIntangibleAssetsAndLongTermAssetsCompositionOfIntangibleAssetsDetail" xlink:href="ulbi-20140330.xsd#Note5GoodwillIntangibleAssetsAndLongTermAssetsCompositionOfIntangibleAssetsDetail" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note5GoodwillIntangibleAssetsAndLongTermAssetsDetailNarrative" xlink:href="ulbi-20140330.xsd#Note5GoodwillIntangibleAssetsAndLongTermAssetsDetailNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note6RevolvingCreditAgreementDetailNarrative" xlink:href="ulbi-20140330.xsd#Note6RevolvingCreditAgreementDetailNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note7ShareholdersEquityScheduleOfStockOptionActivityDetail" xlink:href="ulbi-20140330.xsd#Note7ShareholdersEquityScheduleOfStockOptionActivityDetail" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note7ShareholdersEquityStockOptionAssumptionsDetail" xlink:href="ulbi-20140330.xsd#Note7ShareholdersEquityStockOptionAssumptionsDetail" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note7ShareholdersEquityDetailNarrative" xlink:href="ulbi-20140330.xsd#Note7ShareholdersEquityDetailNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note8-IncomeTaxesEffectiveConsolidatedTaxRateDetail" xlink:href="ulbi-20140330.xsd#Note8-IncomeTaxesEffectiveConsolidatedTaxRateDetail" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note8IncomeTaxesUnrecognizedTaxBenefitsDetail" xlink:href="ulbi-20140330.xsd#Note8IncomeTaxesUnrecognizedTaxBenefitsDetail" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note8IncomeTaxesDetailNarrative" xlink:href="ulbi-20140330.xsd#Note8IncomeTaxesDetailNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note9EarningsPerShareDetailNarrative" xlink:href="ulbi-20140330.xsd#Note9EarningsPerShareDetailNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note10CommitmentsAndContingenciesWarrantyActivityDetail" xlink:href="ulbi-20140330.xsd#Note10CommitmentsAndContingenciesWarrantyActivityDetail" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note10CommitmentsAndContingenciesDetailNarrative" xlink:href="ulbi-20140330.xsd#Note10CommitmentsAndContingenciesDetailNarrative" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note11BusinessSegmentInformationDetail" xlink:href="ulbi-20140330.xsd#Note11BusinessSegmentInformationDetail" xlink:type="simple" />
    <link:roleRef roleURI="http://ultralifecorporation.com/role/Note13FireAtManufacturingFacilityDetail" xlink:href="ulbi-20140330.xsd#Note13FireAtManufacturingFacilityDetail" xlink:type="simple" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll" arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/DocumentAndEntityInformation" xlink:title="00000001 - Document - Document and Entity Information" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/BalanceSheets" xlink:title="00000002 - Statement - Condensed Consolidated Balance Sheets" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/BalanceSheetsParenthetical" xlink:title="00000003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/StatementsOfOperationsAndComprehensiveLossIncome" xlink:title="00000004 - Statement - Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/StatementsOfCashFlows" xlink:title="00000005 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note1.BasisOfPresentation" xlink:title="00000006 - Disclosure - Note 1. Basis of Presentation" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note2.SubsequentEvents" xlink:title="00000007 - Disclosure - Note 2. Subsequent Events" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note3.Inventories" xlink:title="00000008 - Disclosure - Note 3. Inventories" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note4.PropertyEquipmentAndImprovements" xlink:title="00000009 - Disclosure - Note 4. Property, Equipment and Improvements" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note5.GoodwillIntangibleAssetsAndLongTermAssets" xlink:title="00000010 - Disclosure - Note 5. Goodwill, Intangible Assets and Long Term Assets" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note6RevolvingCreditAgreement" xlink:title="00000011 - Disclosure - Note 6 Revolving Credit Agreement" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note7ShareholdersEquity" xlink:title="00000012 - Disclosure - Note 7 Shareholders' Equity" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note8IncomeTaxes" xlink:title="00000013 - Disclosure - Note 8 Income Taxes" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note9EarningsPerShare" xlink:title="00000014 - Disclosure - Note 9 Earnings Per Share" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note10CommitmentsAndContingencies" xlink:title="00000015 - Disclosure - Note 10 Commitments and Contingencies" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note11BusinessSegmentInformation" xlink:title="00000016 - Disclosure - Note 11 Business Segment Information" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note12FairValueOfFinancialInstruments" xlink:title="00000017 - Disclosure - Note 12 Fair Value of Financial Instruments" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note13FireAtManufacturingFacility" xlink:title="00000018 - Disclosure - Note 13 Fire At Manufacturing Facility" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note14RecentAccountingPronouncementsAndDevelopments" xlink:title="00000019 - Disclosure - Note 14 Recent Accounting Pronouncements and Developments" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note3.InventoriesTables" xlink:title="00000020 - Disclosure - Note 3. Inventories (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note4.PropertyEquipmentAndImprovementsTables" xlink:title="00000021 - Disclosure - Note 4. Property, Equipment and Improvements (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note5.GoodwillIntangibleAssetsAndLongTermAssetsTables" xlink:title="00000022 - Disclosure - Note 5. Goodwill, Intangible Assets and Long Term Assets (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note7ShareholdersEquityTables" xlink:title="00000023 - Disclosure - Note 7 Shareholders' Equity (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note8IncomeTaxesTables" xlink:title="00000024 - Disclosure - Note 8 Income Taxes (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note10CommitmentsAndContingenciesTables" xlink:title="00000025 - Disclosure - Note 10 Commitments and Contingencies (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note11BusinessSegmentInformationTables" xlink:title="00000026 - Disclosure - Note 11 Business Segment Information (Tables)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note2SubsequentEventsDetailNarrative" xlink:title="00000027 - Disclosure - Note 2 Subsequent Events (Detail Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note3.InventoriesDetail" xlink:title="00000028 - Disclosure - Note 3. Inventories (Detail)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note4.PropertyEquipmentAndImprovementsDetail" xlink:title="00000029 - Disclosure - Note 4. Property, Equipment and Improvements (Detail)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note4PropertyEquipmentAndImprovementsDetailNarrative" xlink:title="00000030 - Disclosure - Note 4 Property Equipment and Improvements (Detail Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note5GoodwillIntangibleAssetsAndLongTermAssetsGoodwillActivityDetail" xlink:title="00000031 - Disclosure - Note 5  Goodwill, Intangible Assets and Long Term Assets  Goodwill Activity (Detail)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaapStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaapStatementTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStatementTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaapIndefiniteLivedIntangibleAssetsByMajorClassAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaapStatementTable" xlink:to="loc_us-gaapIndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaapIndefiniteLivedIntangibleAssetsMajorClassNameDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaapIndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="loc_us-gaapIndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaapIndefiniteLivedIntangibleAssetsMajorClassNameDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_us-gaapIndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="loc_us-gaapIndefiniteLivedIntangibleAssetsMajorClassNameDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_BatteryEnergyProductsMember" xlink:label="loc_ULBIBatteryEnergyProductsMember_0" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapIndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="loc_ULBIBatteryEnergyProductsMember_0" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_CommunicationsSystemsMember" xlink:label="loc_ULBICommunicationsSystemsMember_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapIndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="loc_ULBICommunicationsSystemsMember_70" xlink:type="arc" order="71" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaapGoodwill_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapGoodwill_220" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GoodwillTranslationAdjustments" xlink:label="loc_us-gaapGoodwillTranslationAdjustments_220" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapGoodwillTranslationAdjustments_220" xlink:type="arc" order="2" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note5GoodwillIntangibleAssetsAndLongTermAssetsCompositionOfIntangibleAssetsDetail" xlink:title="00000032 - Disclosure - Note 5 Goodwill, Intangible Assets and Long Term Assets Composition of Intangible Assets (Detail)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaapStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaapStatementTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStatementTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaapFiniteLivedIntangibleAssetsByMajorClassAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaapStatementTable" xlink:to="loc_us-gaapFiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaapFiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_us-gaapFiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TrademarksMember" xlink:label="loc_us-gaapTrademarksMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="loc_us-gaapTrademarksMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_PatentsAndTechnologyMember" xlink:label="loc_ULBIPatentsAndTechnologyMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="loc_ULBIPatentsAndTechnologyMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaapCustomerRelationshipsMember_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="loc_us-gaapCustomerRelationshipsMember_60" xlink:type="arc" order="61" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_DistributorRelationshipsMember" xlink:label="loc_ULBIDistributorRelationshipsMember_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="loc_ULBIDistributorRelationshipsMember_80" xlink:type="arc" order="81" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncompeteAgreementsMember" xlink:label="loc_us-gaapNoncompeteAgreementsMember_100" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapFiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="loc_us-gaapNoncompeteAgreementsMember_100" xlink:type="arc" order="101" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaapFiniteLivedIntangibleAssetsGross_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapFiniteLivedIntangibleAssetsGross_130" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaapFiniteLivedIntangibleAssetsAccumulatedAmortization_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapFiniteLivedIntangibleAssetsAccumulatedAmortization_130" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaapFiniteLivedIntangibleAssetsNet_130" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapFiniteLivedIntangibleAssetsNet_130" xlink:type="arc" order="3" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note5GoodwillIntangibleAssetsAndLongTermAssetsDetailNarrative" xlink:title="00000033 - Disclosure - Note 5 Goodwill, Intangible Assets and Long Term Assets (Detail Narrative)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaapStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaapStatementTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStatementTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementOperatingActivitiesSegmentAxis" xlink:label="loc_us-gaapStatementOperatingActivitiesSegmentAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaapStatementTable" xlink:to="loc_us-gaapStatementOperatingActivitiesSegmentAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaapSegmentOperatingActivitiesDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaapStatementOperatingActivitiesSegmentAxis" xlink:to="loc_us-gaapSegmentOperatingActivitiesDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentOperatingActivitiesDomain" xlink:label="loc_us-gaapSegmentOperatingActivitiesDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_us-gaapStatementOperatingActivitiesSegmentAxis" xlink:to="loc_us-gaapSegmentOperatingActivitiesDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_SellingGeneralAndAdministrativeMember" xlink:label="loc_ULBISellingGeneralAndAdministrativeMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapSegmentOperatingActivitiesDomain" xlink:to="loc_ULBISellingGeneralAndAdministrativeMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_ResearchAndDevelopmentMember" xlink:label="loc_ULBIResearchAndDevelopmentMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapSegmentOperatingActivitiesDomain" xlink:to="loc_ULBIResearchAndDevelopmentMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaapAmortizationOfIntangibleAssets_70" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapAmortizationOfIntangibleAssets_70" xlink:type="arc" order="1" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note6RevolvingCreditAgreementDetailNarrative" xlink:title="00000034 - Disclosure - Note 6 Revolving Credit Agreement (Detail Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note7ShareholdersEquityScheduleOfStockOptionActivityDetail" xlink:title="00000035 - Disclosure - Note 7 Shareholders' Equity Schedule of Stock Option Activity (Detail)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note7ShareholdersEquityStockOptionAssumptionsDetail" xlink:title="00000036 - Disclosure - Note 7 Shareholders' Equity Stock Option Assumptions (Detail)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note7ShareholdersEquityDetailNarrative" xlink:title="00000037 - Disclosure - Note 7 Shareholders' Equity (Detail Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note8-IncomeTaxesEffectiveConsolidatedTaxRateDetail" xlink:title="00000038 - Disclosure - Note 8 - Income Taxes Effective consolidated tax rate (Detail)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note8IncomeTaxesUnrecognizedTaxBenefitsDetail" xlink:title="00000039 - Disclosure - Note 8 Income Taxes Unrecognized Tax Benefits (Detail)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note8IncomeTaxesDetailNarrative" xlink:title="00000040 - Disclosure - Note 8 Income Taxes (Detail Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note9EarningsPerShareDetailNarrative" xlink:title="00000041 - Disclosure - Note 9 Earnings Per Share (Detail Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note10CommitmentsAndContingenciesWarrantyActivityDetail" xlink:title="00000042 - Disclosure - Note 10 Commitments and Contingencies Warranty Activity (Detail)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note10CommitmentsAndContingenciesDetailNarrative" xlink:title="00000043 - Disclosure - Note 10 Commitments and Contingencies (Detail Narrative)" />
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note11BusinessSegmentInformationDetail" xlink:title="00000044 - Disclosure - Note 11 Business Segment Information (Detail)">
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaapStatementLineItems" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaapStatementTable" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xbrldt:contextElement="segment" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapStatementTable" xlink:type="arc" order="10" xbrldt:closed="true" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaapStatementBusinessSegmentsAxis" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaapStatementTable" xlink:to="loc_us-gaapStatementBusinessSegmentsAxis" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaapSegmentDomain" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaapStatementBusinessSegmentsAxis" xlink:to="loc_us-gaapSegmentDomain" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaapSegmentDomain_10" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xbrldt:contextElement="segment" xlink:from="loc_us-gaapStatementBusinessSegmentsAxis" xlink:to="loc_us-gaapSegmentDomain_10" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_BatteryEnergyProductsMember" xlink:label="loc_ULBIBatteryEnergyProductsMember_20" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapSegmentDomain" xlink:to="loc_ULBIBatteryEnergyProductsMember_20" xlink:type="arc" order="21" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_CommunicationsSystemsMember" xlink:label="loc_ULBICommunicationsSystemsMember_40" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapSegmentDomain" xlink:to="loc_ULBICommunicationsSystemsMember_40" xlink:type="arc" order="41" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_DiscontinuedOperationsMember" xlink:label="loc_ULBIDiscontinuedOperationsMember_60" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapSegmentDomain" xlink:to="loc_ULBIDiscontinuedOperationsMember_60" xlink:type="arc" order="61" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CorporateMember" xlink:label="loc_us-gaapCorporateMember_80" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapSegmentDomain" xlink:to="loc_us-gaapCorporateMember_80" xlink:type="arc" order="81" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaapRevenues_210" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapRevenues_210" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_CostOfGoodsSoldLessOperatingExpenses" xlink:label="loc_ULBICostOfGoodsSoldLessOperatingExpenses_210" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_ULBICostOfGoodsSoldLessOperatingExpenses_210" xlink:type="arc" order="1" />
      <link:loc xlink:type="locator" xlink:href="ulbi-20140330.xsd#ULBI_InterestFinancingAndMiscellaneousExpense" xlink:label="loc_ULBIInterestFinancingAndMiscellaneousExpense_210" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_ULBIInterestFinancingAndMiscellaneousExpense_210" xlink:type="arc" order="2" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaapIncomeTaxExpenseBenefit_210" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapIncomeTaxExpenseBenefit_210" xlink:type="arc" order="3" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax" xlink:label="loc_us-gaapDiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_210" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapDiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_210" xlink:type="arc" order="4" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaapNetIncomeLossAttributableToNoncontrollingInterest_210" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapNetIncomeLossAttributableToNoncontrollingInterest_210" xlink:type="arc" order="5" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss_210" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapNetIncomeLoss_210" xlink:type="arc" order="6" />
      <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaapAssets_210" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaapStatementLineItems" xlink:to="loc_us-gaapAssets_210" xlink:type="arc" order="7" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://ultralifecorporation.com/role/Note13FireAtManufacturingFacilityDetail" xlink:title="00000045 - Disclosure - Note 13 Fire at Manufacturing Facility (Detail)" />
</link:linkbase>





