Summary of Significant Accounting Policies (Policies) |
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Jul. 05, 2026 | |||||||||||||||||||||||||
| Accounting Policies [Abstract] | |||||||||||||||||||||||||
| Fiscal Year | Fiscal Year Our fiscal year is the 52 or 53-week period ending on the Sunday closest to December 31 depending on the calendar year. Accordingly, we will have a 53-week fiscal year every five or six years. Our fiscal year 2026 consists of 53 weeks, which will end on January 3, 2027, while our fiscal year 2025 consisted of 52 weeks, which ended on December 28, 2025. All period references are to the fiscal periods unless otherwise indicated.
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| Basis of Presentation | The accompanying condensed consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States (“GAAP”).These accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial reporting. In the opinion of management, these unaudited condensed consolidated financial statements reflect all adjustments, consisting of normal recurring items, considered necessary to present fairly our financial condition, results of operations, comprehensive income (loss), stockholders’ equity and cash flows for the periods presented above. | ||||||||||||||||||||||||
| Consolidation | The condensed consolidated financial statements include our accounts, our wholly-owned subsidiaries and majority-owned subsidiaries and the business combinations from the closing dates. All intercompany balances and transactions have been eliminated in consolidation. | ||||||||||||||||||||||||
| Use of Estimates | Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities in the condensed consolidated financial statements and accompanying notes during the reporting periods. Estimates and assumptions include but are not limited to: depreciable lives for property and equipment and intangible assets, valuation for inventory, valuation allowance on deferred tax assets, assumptions used in income tax provisions, assumptions used in stock-based compensation, incremental borrowing rate for operating right-of-use assets and lease liabilities and estimates to fair value common stock warrants. Management bases its estimates on historical experience and on various other market-specific and relevant assumptions that it believes to be reasonable under the circumstances.
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| Segment Reporting | Segment Reporting We operate in one segment. Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision maker (“CODM”) in making decisions regarding resource allocation and assessing performance. Our Chief Executive Officer (“CEO”) has been identified as our CODM, who reviews operating results to make decisions and assesses performance for the Company as a whole. Total available cash and cash equivalents, total revenues and net loss are used by our CEO to evaluate key operating decisions, such as company strategy, and determine and allocate resources on a consolidated basis. Since we operate in one segment, all significant segment expenses and financial information required by “Segment Reporting” can be found in the condensed consolidated financial statements and the accompanying notes of the condensed consolidated financial statements.
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| Revenue | Revenue We recognize revenue in accordance with Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers. We generate revenue from selling lithium-ion batteries or battery packs to commercial customers and military contractors. Product revenue is recognized once we have satisfied the performance obligations as defined in the sales agreement, which is generally satisfied upon transfer of control of goods. Control is transferred upon delivery for our products. For certain customized products with customer acceptance criteria specified in the sales agreement, the performance obligations are generally satisfied upon our customer’s acceptance. Payment terms can vary depending on the contract and it is generally required within 90 days or less from the delivery date or the acceptance date of our product. The amounts of revenue recognized reflect the consideration for the product sold.
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| Recently Issued or Adopted Accounting Pronouncements | Recently Issued or Adopted Accounting Pronouncements Adoption of New Accounting Standards In July 2025, the FASB issued ASU 2025-05, Measurement of Credit Losses for Accounts Receivable and Contract Assets, which simplifies the application of the current expected credit loss model for current accounts receivable and current contract assets under ASC 606. This ASU is effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. Early adoption is permitted. We adopted this ASU prospectively, effective with our fiscal 2026 interim financial statements and the adoption did not have a material impact on our condensed consolidated financial statements and disclosures. Accounting Standard Issued But Not Yet Adopted In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures, which requires disclosure of certain costs and expenses on an interim and annual basis in the notes to the financial statements. The standard is effective for the annual reporting periods beginning after December 15, 2026 and interim periods beginning after December 15, 2027, with early adoption permitted. We are currently evaluating the potential impact of the adoption of this ASU on our financial statement disclosures. In September 2025, the FASB issued ASU 2025-06, “Targeted Improvements to the Accounting for Internal-Use Software” (“ASU 2025-06”), which simplifies the capitalization guidance by removing all references to software development project stages so that the guidance is neutral to different software development methods. ASU 2025-06 is effective for annual reporting periods beginning after December 15, 2027, and interim reporting periods within those annual reporting periods. Early adoption is permitted. ASU 2025-06 permits an entity to apply the new guidance using a prospective, retrospective or modified transition approach. The Company is currently evaluating the impact from ASU 2025-06 on its condensed consolidated financial statements.
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| Fair Value of Financial Instruments | The fair value of our financial assets and liabilities are determined in accordance with the fair value hierarchy established in ASC 820, Fair Value Measurements, issued by the FASB. The fair value hierarchy of ASC 820 requires an entity to maximize the use of observable inputs when measuring fair value and classifies those inputs into three levels:
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