3.25.4 html 147 382 1 false 59 0 false 10 false false R1.htm 0000001 - Document - Cover Sheet http://www.amprius.com/role/Cover Cover Cover 1 false false R2.htm 0000002 - Document - Audit Information Sheet http://www.amprius.com/role/AuditInformation Audit Information Cover 2 false false R3.htm 9952151 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.amprius.com/role/CONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS Statements 3 false false R4.htm 9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.amprius.com/role/CONSOLIDATEDBALANCESHEETSParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 4 false false R5.htm 9952153 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS Sheet http://www.amprius.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS CONSOLIDATED STATEMENTS OF OPERATIONS Statements 5 false false R6.htm 9952154 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS Sheet http://www.amprius.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS Statements 6 false false R7.htm 9952155 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS??? EQUITY Sheet http://www.amprius.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY CONSOLIDATED STATEMENTS OF STOCKHOLDERS??? EQUITY Statements 7 false false R8.htm 9952156 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.amprius.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 8 false false R9.htm 9952157 - Disclosure - Overview Sheet http://www.amprius.com/role/Overview Overview Notes 9 false false R10.htm 9952158 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.amprius.com/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 10 false false R11.htm 9952159 - Disclosure - Revenue Sheet http://www.amprius.com/role/Revenue Revenue Notes 11 false false R12.htm 9952160 - Disclosure - Inventories Sheet http://www.amprius.com/role/Inventories Inventories Notes 12 false false R13.htm 9952161 - Disclosure - Property, Plant and Equipment, Net Sheet http://www.amprius.com/role/PropertyPlantandEquipmentNet Property, Plant and Equipment, Net Notes 13 false false R14.htm 9952162 - Disclosure - Accrued and Other Current Liabilities Sheet http://www.amprius.com/role/AccruedandOtherCurrentLiabilities Accrued and Other Current Liabilities Notes 14 false false R15.htm 9952163 - Disclosure - Stockholders' Equity Sheet http://www.amprius.com/role/StockholdersEquity Stockholders' Equity Notes 15 false false R16.htm 9952164 - Disclosure - Income Taxes Sheet http://www.amprius.com/role/IncomeTaxes Income Taxes Notes 16 false false R17.htm 9952165 - Disclosure - Leases Sheet http://www.amprius.com/role/Leases Leases Notes 17 false false R18.htm 9952166 - Disclosure - Commitments and Contingencies Sheet http://www.amprius.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 18 false false R19.htm 9952167 - Disclosure - Net Loss Per Share Sheet http://www.amprius.com/role/NetLossPerShare Net Loss Per Share Notes 19 false false R20.htm 9952168 - Disclosure - Subsequent Event Sheet http://www.amprius.com/role/SubsequentEvent Subsequent Event Notes 20 false false R21.htm 995445 - Disclosure - Insider Trading Arrangements Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements Insider Trading Arrangements Notes 21 false false R22.htm 995447 - Disclosure - Insider Trading Policies and Procedures Sheet http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc Insider Trading Policies and Procedures Notes 22 false false R23.htm 995550 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure Sheet http://xbrl.sec.gov/cyd/role/CybersecurityRiskManagementAndStrategyDisclosure Cybersecurity Risk Management and Strategy Disclosure Notes 23 false false R24.htm 9955511 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.amprius.com/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.amprius.com/role/SummaryofSignificantAccountingPolicies 24 false false R25.htm 9955512 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.amprius.com/role/SummaryofSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.amprius.com/role/SummaryofSignificantAccountingPolicies 25 false false R26.htm 9955513 - Disclosure - Revenue (Tables) Sheet http://www.amprius.com/role/RevenueTables Revenue (Tables) Tables http://www.amprius.com/role/Revenue 26 false false R27.htm 9955514 - Disclosure - Inventories (Tables) Sheet http://www.amprius.com/role/InventoriesTables Inventories (Tables) Tables http://www.amprius.com/role/Inventories 27 false false R28.htm 9955515 - Disclosure - Property, Plant and Equipment, Net (Tables) Sheet http://www.amprius.com/role/PropertyPlantandEquipmentNetTables Property, Plant and Equipment, Net (Tables) Tables http://www.amprius.com/role/PropertyPlantandEquipmentNet 28 false false R29.htm 9955516 - Disclosure - Accrued and Other Current Liabilities (Tables) Sheet http://www.amprius.com/role/AccruedandOtherCurrentLiabilitiesTables Accrued and Other Current Liabilities (Tables) Tables http://www.amprius.com/role/AccruedandOtherCurrentLiabilities 29 false false R30.htm 9955517 - Disclosure - Stockholders' Equity (Tables) Sheet http://www.amprius.com/role/StockholdersEquityTables Stockholders' Equity (Tables) Tables http://www.amprius.com/role/StockholdersEquity 30 false false R31.htm 9955518 - Disclosure - Income Taxes (Tables) Sheet http://www.amprius.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.amprius.com/role/IncomeTaxes 31 false false R32.htm 9955519 - Disclosure - Leases (Tables) Sheet http://www.amprius.com/role/LeasesTables Leases (Tables) Tables http://www.amprius.com/role/Leases 32 false false R33.htm 9955520 - Disclosure - Net Loss Per Share (Tables) Sheet http://www.amprius.com/role/NetLossPerShareTables Net Loss Per Share (Tables) Tables http://www.amprius.com/role/NetLossPerShare 33 false false R34.htm 9955521 - Disclosure - Overview (Details) Sheet http://www.amprius.com/role/OverviewDetails Overview (Details) Details http://www.amprius.com/role/Overview 34 false false R35.htm 9955522 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details) Sheet http://www.amprius.com/role/SummaryofSignificantAccountingPoliciesNarrativeDetails Summary of Significant Accounting Policies - Narrative (Details) Details 35 false false R36.htm 9955523 - Disclosure - Summary of Significant Accounting Policies - Schedule of Property and Equipment, Net (Details) Sheet http://www.amprius.com/role/SummaryofSignificantAccountingPoliciesScheduleofPropertyandEquipmentNetDetails Summary of Significant Accounting Policies - Schedule of Property and Equipment, Net (Details) Details 36 false false R37.htm 9955524 - Disclosure - Summary of Significant Accounting Policies - Revenue by Geographic Area Based on Delivery Location (Details) Sheet http://www.amprius.com/role/SummaryofSignificantAccountingPoliciesRevenuebyGeographicAreaBasedonDeliveryLocationDetails Summary of Significant Accounting Policies - Revenue by Geographic Area Based on Delivery Location (Details) Details 37 false false R38.htm 9955525 - Disclosure - Revenue - Schedule of Composition of Revenue (Details) Sheet http://www.amprius.com/role/RevenueScheduleofCompositionofRevenueDetails Revenue - Schedule of Composition of Revenue (Details) Details 38 false false R39.htm 9955526 - Disclosure - Revenue - Narrative (Details) Sheet http://www.amprius.com/role/RevenueNarrativeDetails Revenue - Narrative (Details) Details 39 false false R40.htm 9955527 - Disclosure - Revenue - Performance Obligation (Details) Sheet http://www.amprius.com/role/RevenuePerformanceObligationDetails Revenue - Performance Obligation (Details) Details 40 false false R41.htm 9955528 - Disclosure - Inventories - Schedule of Inventories (Details) Sheet http://www.amprius.com/role/InventoriesScheduleofInventoriesDetails Inventories - Schedule of Inventories (Details) Details 41 false false R42.htm 9955529 - Disclosure - Property, Plant and Equipment, Net - Schedule of Property and Equipment (Details) Sheet http://www.amprius.com/role/PropertyPlantandEquipmentNetScheduleofPropertyandEquipmentDetails Property, Plant and Equipment, Net - Schedule of Property and Equipment (Details) Details 42 false false R43.htm 9955530 - Disclosure - Property, Plant and Equipment, Net - Narrative (Details) Sheet http://www.amprius.com/role/PropertyPlantandEquipmentNetNarrativeDetails Property, Plant and Equipment, Net - Narrative (Details) Details 43 false false R44.htm 9955531 - Disclosure - Accrued and Other Current Liabilities - Summary (Details) Sheet http://www.amprius.com/role/AccruedandOtherCurrentLiabilitiesSummaryDetails Accrued and Other Current Liabilities - Summary (Details) Details 44 false false R45.htm 9955532 - Disclosure - Stockholders' Equity - Narrative (Details) Sheet http://www.amprius.com/role/StockholdersEquityNarrativeDetails Stockholders' Equity - Narrative (Details) Details 45 false false R46.htm 9955533 - Disclosure - Stockholders' Equity - Summary of Option Activity (Details) Sheet http://www.amprius.com/role/StockholdersEquitySummaryofOptionActivityDetails Stockholders' Equity - Summary of Option Activity (Details) Details 46 false false R47.htm 9955534 - Disclosure - Stockholders' Equity - Summary of Restricted Stock Unit Activity (Details) Sheet http://www.amprius.com/role/StockholdersEquitySummaryofRestrictedStockUnitActivityDetails Stockholders' Equity - Summary of Restricted Stock Unit Activity (Details) Details 47 false false R48.htm 9955535 - Disclosure - Stockholders' Equity - Schedule of Stock Warrant (Details) Sheet http://www.amprius.com/role/StockholdersEquityScheduleofStockWarrantDetails Stockholders' Equity - Schedule of Stock Warrant (Details) Details 48 false false R49.htm 9955536 - Disclosure - Stockholders' Equity - Stock-Based Compensation Expense (Details) Sheet http://www.amprius.com/role/StockholdersEquityStockBasedCompensationExpenseDetails Stockholders' Equity - Stock-Based Compensation Expense (Details) Details 49 false false R50.htm 9955537 - Disclosure - Income Taxes - Schedule of Loss before Income Tax (Details) Sheet http://www.amprius.com/role/IncomeTaxesScheduleofLossbeforeIncomeTaxDetails Income Taxes - Schedule of Loss before Income Tax (Details) Details 50 false false R51.htm 9955538 - Disclosure - Income Taxes - Narrative (Details) Sheet http://www.amprius.com/role/IncomeTaxesNarrativeDetails Income Taxes - Narrative (Details) Details 51 false false R52.htm 9955539 - Disclosure - Income Taxes - Provision for Income Tax (Details) Sheet http://www.amprius.com/role/IncomeTaxesProvisionforIncomeTaxDetails Income Taxes - Provision for Income Tax (Details) Details 52 false false R53.htm 9955540 - Disclosure - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) Sheet http://www.amprius.com/role/IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesDetails Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) Details 53 false false R54.htm 9955541 - Disclosure - Income Taxes - Operating Loss Carry forwards And Tax Credit Carry forward (Details) Sheet http://www.amprius.com/role/IncomeTaxesOperatingLossCarryforwardsAndTaxCreditCarryforwardDetails Income Taxes - Operating Loss Carry forwards And Tax Credit Carry forward (Details) Details 54 false false R55.htm 9955542 - Disclosure - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) Sheet http://www.amprius.com/role/IncomeTaxesReconciliationofUnrecognizedTaxBenefitsDetails Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) Details 55 false false R56.htm 9955543 - Disclosure - Leases - Narrative (Details) Sheet http://www.amprius.com/role/LeasesNarrativeDetails Leases - Narrative (Details) Details 56 false false R57.htm 9955544 - Disclosure - Leases - Components of Lease Expense (Details) Sheet http://www.amprius.com/role/LeasesComponentsofLeaseExpenseDetails Leases - Components of Lease Expense (Details) Details 57 false false R58.htm 9955545 - Disclosure - Leases - Schedule of Lease Term and Discount Rate (Details) Sheet http://www.amprius.com/role/LeasesScheduleofLeaseTermandDiscountRateDetails Leases - Schedule of Lease Term and Discount Rate (Details) Details 58 false false R59.htm 9955546 - Disclosure - Leases - Schedule of Future Maturing Operating Lease Payments (Details) Sheet http://www.amprius.com/role/LeasesScheduleofFutureMaturingOperatingLeasePaymentsDetails Leases - Schedule of Future Maturing Operating Lease Payments (Details) Details 59 false false R60.htm 9955547 - Disclosure - Net Loss Per Share - Schedule of Calculation of Basic and Diluted Net Loss Per Share (Details) Sheet http://www.amprius.com/role/NetLossPerShareScheduleofCalculationofBasicandDilutedNetLossPerShareDetails Net Loss Per Share - Schedule of Calculation of Basic and Diluted Net Loss Per Share (Details) Details 60 false false R61.htm 9955548 - Disclosure - Net Loss Per Share - Potentially Dilutive Securities (Details) Sheet http://www.amprius.com/role/NetLossPerSharePotentiallyDilutiveSecuritiesDetails Net Loss Per Share - Potentially Dilutive Securities (Details) Details 61 false false R62.htm 9955549 - Disclosure - Subsequent Event (Details) Sheet http://www.amprius.com/role/SubsequentEventDetails Subsequent Event (Details) Details http://www.amprius.com/role/SubsequentEvent 62 false false All Reports Book All Reports ampx-20251231.htm ampx-20251231.xsd ampx-20251231_cal.xml ampx-20251231_def.xml ampx-20251231_lab.xml ampx-20251231_pre.xml ampx-20251231_g1.jpg ampx-20251231_g2.jpg http://fasb.org/us-gaap/2025 http://xbrl.sec.gov/cyd/2025 http://xbrl.sec.gov/dei/2025 http://xbrl.sec.gov/ecd/2025 true true