Nature of Operations and Organization	3 Months Ended
Nature of Operations and Organization	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Organization	Nature of Operations and Organization Nature of Operations Amprius Technologies, Inc. (hereafter referred to as the “Company,” “we,” “us,” or “our”) has developed, and since 2018, been in commercial production of lithium-ion batteries for mobility applications leveraging a disruptive silicon anode. Our silicon anode technology is intended to enable batteries with higher energy density, higher power density and fast charging capabilities over a wide range of operating temperatures. Our headquarters is located in Fremont, California. Business Combination During fiscal year 2022, on September 14, 2022 (the “Closing Date”), we completed a business combination pursuant to the Business Combination Agreement, dated May 11, 2022 (the “Business Combination Agreement”), by and among the Company, Amprius Technologies Operating, Inc. (formerly known as Amprius Technologies, Inc. or "Legacy Amprius"), Kensington Capital Acquisition Corp. IV, and Kensington Capital Merger Sub Corp. (“Merger Sub”). Pursuant to the terms of the Business Combination Agreement, Kensington Capital Acquisition Corp. IV changed its jurisdiction of incorporation by domesticating as a corporation incorporated under the laws of the State of Delaware (the “Domestication”), upon which it changed its name to “Amprius Technologies, Inc.,” and a business combination between Kensington Capital Acquisition Corp. IV and Legacy Amprius was effected through the merger of Merger Sub with and into Legacy Amprius, with Legacy Amprius surviving as a wholly owned subsidiary of the Company (together with the Domestication and the other transactions contemplated by the Business Combination Agreement, the “Business Combination”). Unless the context otherwise provides, the “Company” refers (i) prior to the Closing Date, to Legacy Amprius and (ii) on and after the Closing Date, to Amprius Technologies, Inc. and its subsidiaries, including Legacy Amprius. Prior to the Business Combination, Kensington Capital Acquisition Corp. IV is referred to herein as “Kensington.” The Business Combination was treated as a reverse recapitalization. Legacy Amprius was determined as the accounting acquirer and Kensington as the accounting acquiree for financial reporting purposes. Liquidity and Capital Resources Since our inception, we have incurred recurring losses and negative cash flows from operations. During the three months ended March 31, 2023, our net loss was $9.1 million and at March 31, 2023, our accumulated deficit was $102.0 million. We expect to incur additional losses in the future as we scale our business and increase our operating expenditures, such as increasing our research and development spend and headcount. Additionally, we expect to increase our capital expenditures as we plan to build a GWh-scale manufacturing facility in the future. We may need to raise funds in order to meet our future operating and capital expenditure requirements. We may be unable to raise additional funds or enter into such other agreements when needed on favorable terms or at all. If sufficient funding is not raised, we may need to reduce our spending activities, which may negatively affect our ability to achieve our operating goals. To the extent that we raise additional funds by issuing equity securities, our stockholders may experience additional dilution. We had cash and cash equivalents of $64.2 million as of March 31, 2023. We believe that our cash and cash equivalents will be sufficient to fund our operating and capital expenditure requirements over twelve months from the date these financial statements are issued. On September 27, 2022, we entered into a Common Stock Purchase Agreement (“Purchase Agreement”) with B. Riley Principal Capital II, LLC (“BRPC II”), pursuant to which BRPC II committed to purchase up to $200.0 million of our common stock until January 1, 2025, subject to certain contractual terms (the “Committed Equity Financing”). As of March 31, 2023, $197.6 million remained available under the Committed Equity Financing. There can be no assurance that we will be able to raise such amount over the remaining period as the Committed Equity Financing contains certain limitations and conditions. On October 19, 2022, the U.S. Department of Energy (“DOE”) under the Bipartisan Infrastructure Law awarded us a cost-sharing grant of $50.0 million. The grant is dependent upon the successful negotiation of a final contract. There can be no assurance that such negotiation will be successful. Other Risk and Uncertainties We face risks related to the COVID-19 pandemic, which has created significant volatility in the global economy, led to business disruptions, reduced economic activities, and imposition of travel restrictions. Although the COVID-19 pandemic did not have an adverse impact to us to-date, its future development is highly uncertain and cannot be predicted. Even after the COVID-19 pandemic has subsided, our company and our customers may continue to experience its negative effect, which may adversely affect our future financial condition, results of operations and cash flows. We also face risks related to the war between Russia and Ukraine, which has also led to significant volatility in the global economy resulting in higher inflation, volatility in the credit and capital markets, and interruption in the supply chain. Although this war did not have an adverse impact to us to-date, its future outcome is highly unpredictable and uncertain, which may also adversely affect our future financial condition, results of operations and cash flows.