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Summary of Significant Accounting Policies (Policies) | 9 Months Ended | 12 Months Ended
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Mar. 31, 2020 | Jun. 30, 2019
Accounting Policies [Abstract] |  |
Principles of Consolidation |  | Principles of Consolidation The consolidated financial statements include Flux Power Holdings, Inc. and its wholly-owned subsidiary Flux Power, Inc. after elimination of all intercompany accounts and transactions.
Reclassifications |  | Reclassifications Certain prior year amounts have been reclassified to conform to the current year presentation for comparative purposes.
Use of Estimates |  | Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, and expenses, as well as certain financial statement disclosures. Significant estimates include valuation allowances relating to inventory and deferred tax assets. While management believes that the estimates and assumptions used in the preparation of the financial statements are appropriate, actual results could differ from these estimates.
Cash and Cash Equivalents |  | Cash and Cash Equivalents As of June 30, 2019, cash totaled approximately $102,000 and consists of funds held in a non-interest bearing bank deposit account. The Company considers all liquid short-term investments with maturities of less than three months when acquired to be cash equivalents. The Company had no cash equivalents at June 30, 2019 and 2018.
Fair Values of Financial Instruments |  | Fair Values of Financial Instruments The carrying amount of our cash, accounts payable, accounts receivable, and accrued liabilities approximates their estimated fair values due to the short-term maturities of those financial instruments. The carrying amount of the line of credit agreement approximates its fair values as interest approximates current market interest rates for similar instruments. Management has concluded that it is not practical to determine the estimated fair value of amounts due to related parties because the transactions cannot be assumed to have been consummated at arm’s length, the terms are not deemed to be market terms, there are no quoted values available for these instruments, and an independent valuation would not be practical due to the lack of data regarding similar instruments, if any, and the associated potential costs. The Company does not have any other assets or liabilities that are measured at fair value on a recurring or non-recurring basis.
Accounts Receivable |  | Accounts Receivable Accounts receivable are carried at their estimated collectible amounts. The Company has not experienced collection issues related to its accounts receivable, and has not recorded an allowance for doubtful accounts during the fiscal year ended June 30, 2019 and 2018.
Inventories |  | Inventories Inventories consist primarily of battery management systems and the related subcomponents, and are stated at the lower of cost (first-in, first-out) or net realizable value. The Company evaluates inventories to determine if write-downs are necessary due to obsolescence or if the inventory levels are in excess of anticipated demand at market value based on consideration of historical sales and product development plans. The Company recorded an adjustment related to obsolete inventory in the amount of approximately $90,000 and $27,000 during the years ended June 30, 2019 and 2018, respectively. We reviewed our inventory valuation with regards to our gross loss for the fiscal year ended June 30, 2018. The gross loss was due to factors related to new product launch of the GSE packs, such as low volume, early higher cost designs, and limited sourcing as we have seen with the launch of the LiFT Packs. As sales volumes rise we are seeing increased margins. As such, we do not believe the gross loss would require any write-downs to inventory on hand.
Property, Plant and Equipment |  | Property, Plant and Equipment Property, plant and equipment are stated at cost, net of accumulated depreciation. Depreciation and amortization are provided using the straight-line method over the estimated useful lives, of the related assets ranging from three to ten years, or, in the case of leasehold improvements, over the lesser of the useful life of the related asset or the lease term.
Stock-based Compensation |  | Stock-based Compensation Pursuant to the provisions of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic No. 718-10, Compensation-Stock Compensation, which establishes accounting for equity instruments exchanged for employee service, we utilize the Black-Scholes option pricing model to estimate the fair value of employee stock option awards at the date of grant, which requires the input of highly subjective assumptions, including expected volatility and expected life. Changes in these inputs and assumptions can materially affect the measure of estimated fair value of our share-based compensation. These assumptions are subjective and generally require significant analysis and judgment to develop. When estimating fair value, some of the assumptions will be based on, or determined from, external data and other assumptions may be derived from our historical experience with stock-based payment arrangements. The appropriate weight to place on historical experience is a matter of judgment, based on relevant facts and circumstances. Common stock or equity instruments such as warrants issued for services to non-employees are valued at their estimated fair value at the measurement date (the date when a firm commitment for performance of the services is reached, typically the date of issuance, or when performance is complete). If the total value exceeds the par value of the stock issued, the value in excess of the par value is added to the additional paid-in-capital.
Revenue Recognition |  | Revenue Recognition On July 1, 2018, the Company adopted the new accounting standard FASB Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers (“ASC 606”) for all contracts using the modified retrospective method. Based on the Company’s analysis of contracts with customers in prior periods, there was no cumulative effect adjustment to the opening balance of the Company’s accumulated deficit as a result of the adoption of this new standard. The Company derives its revenue from the sale of products to customers. The Company sells its products primarily through a distribution network of equipment dealers, OEMs and battery distributors in North America. The Company recognizes revenue for products when all the significant risks and rewards have been transferred to the customer, no continuing managerial involvement usually associated with ownership of the goods is retained, no effective control over the goods sold is retained, the amount of revenue can be measured reliably, it is probable that the economic benefits associated with the transactions will flow to the Company and the costs incurred or to be incurred in respect of the transaction can be measured reliably. Product revenue is recognized as a distinct single performance obligation which represents the point in time that our customer receives delivery of the products. Our customers do have a right to return product but our returns have historically been insignificant.
Product Warranties |  | Product Warranties The Company evaluates its exposure to product warranty obligations based on historical experience. Our products, primarily lift equipment packs, are warrantied for five years unless modified by a separate agreement. As of June 30, 2019 and 2018, the Company carried warranty liability of approximately $361,000 and $158,000, respectively, which is included in accrued expenses on the Company’s consolidated balance sheets.
Impairment of Long-lived Assets |  | Impairment of Long-lived Assets In accordance with authoritative guidance for the impairment or disposal of long-lived assets, if indicators of impairment exist, the Company assesses the recoverability of the affected long-lived assets by determining whether the carrying value of such assets can be recovered through the undiscounted future operating cash flows. If impairment is indicated, the Company measures the amount of such impairment by comparing the carrying value of the asset to the present value of the expected future cash flows associated with the use of the asset. The Company believes that no impairment indicators were present, and accordingly no impairment losses were recognized during the fiscal years ended June 30, 2019 and 2018.
Research and Development |  | Research and Development The Company is actively engaged in new product development efforts. Research and development cost relating to possible future products are expensed as incurred.
Income Taxes |  | Income Taxes Pursuant to FASB ASC Topic No. 740, Income Taxes, deferred tax assets or liabilities are recorded to reflect the future tax consequences of temporary differences between the financial reporting basis of assets and liabilities and their tax basis at each year-end. These amounts are adjusted, as appropriate, to reflect enacted changes in tax rates expected to be in effect when the temporary differences reverse. The Company has analyzed filing positions in all of the federal and state jurisdictions where the Company is required to file income tax returns, as well as all open tax years in these jurisdictions. As a result, no unrecognized tax benefits have been identified as of June 30, 2019 or June 30, 2018, and accordingly, no additional tax liabilities have been recorded. The Company records deferred tax assets and liabilities based on the differences between the financial statement and tax bases of assets and liabilities and on operating loss carry forwards using enacted tax rates in effect for the year in which the differences are expected to reverse. A valuation allowance is provided when it is more likely than not that some portion or all of a deferred tax asset will not be realized.
Net Loss Per Common Share | Net Loss Per Common Share The Company calculates basic loss per common share by dividing net loss by the weighted average number of common shares outstanding during the periods. Diluted loss per common share includes the impact from all dilutive potential common shares relating to outstanding convertible securities. For the three months ended March 31, 2020 and 2019, basic and diluted weighted-average common shares outstanding were 5,107,845 and 5,076,967, respectively. For the nine months ended March 31, 2020 and 2019, basic and diluted weighted-average common shares outstanding were 5,105,982 and 4,105,433, respectively. The Company incurred a net loss for the three and nine months ended March 31, 2020 and 2019, and therefore, basic and diluted loss per share for the periods are the same because the inclusion of such shares were excluded from diluted weighted-average common shares outstanding during the period, as the inclusion of such shares would be anti-dilutive. The total potentially dilutive common shares outstanding at March 31, 2020 and 2019, excluded from diluted weighted-average common shares outstanding, which include common shares underlying outstanding stock options and warrants, were 581,996 and 592,311, respectively. | Net Loss Per Common Share The Company calculates basic loss per common share by dividing net loss by the weighted average number of common shares outstanding during the periods. Diluted loss per common share includes the impact from all dilutive potential common shares relating to outstanding convertible securities. For the years ended June 30, 2019 and 2018, basic and diluted weighted-average common shares outstanding were 4,364,271 and 2,539,427, respectively. The Company incurred a net loss for the years ended June 30, 2019 and 2018, and therefore, basic and diluted loss per share for each fiscal year are the same because the inclusion of potential common equivalent shares were excluded from diluted weighted-average common shares outstanding during the period, as the inclusion of such shares would be anti-dilutive. The total potentially dilutive common shares outstanding at June 30, 2019 and 2018, excluded from diluted weighted-average common shares outstanding, which include common shares underlying outstanding convertible debt, stock options and warrants, were 588,504 and 1,610,922, respectively.
Recently Adopted Accounting Pronouncements | Recently Adopted Accounting Pronouncements In 2016, the Financial Accounting Standards Board (FASB) issued ASU 2016-02, Leases (ASU 2016-02). ASU 2016-02 requires a lessee to recognize a lease asset representing its right to use the underlying asset for the lease term, and a lease liability for the payments to be made to a lessor, on its balance sheet for all operating leases greater than 12 months. ASU 2016-02 will be effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The new standard became effective for the Company on July 1, 2019, and it was adopted using the modified retrospective method through a cumulative-effect adjustment directly to retained earnings as of that date. The new standard increased the Company’s right-of-use assets and lease liability by approximately $2.7 million and $2.7 million, respectively. On June 20, 2018, the FASB issued Accounting Standards Update (ASU) 2018-07, Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting. ASU 2018-07 is intended to reduce the cost and complexity and to improve financial reporting for share-based payments to nonemployees for goods and services. The amendments in ASU 2018-07 are effective for fiscal years beginning after December 15, 2018, including interim periods therein. The adoption of this guidance by the Company, effective July 1, 2019, did not have a material impact on the Company’s consolidated financial statements. Management has considered all recent accounting pronouncements issued since the last audit of the Company’s consolidated financial statements, and believes that these recent pronouncements will not have a material effect on the Company’s condensed consolidated financial statements. | Recently Adopted Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most existing revenue recognition guidance in U.S. generally accepted accounting principles when it becomes effective. In July 2015, the FASB deferred the effective date of the standard by an additional year; however, it provided companies the option to adopt one year earlier, commensurate with the original effective date. Accordingly, the standard was effective for the Company in the fiscal year beginning July 1, 2018. Subsequently, the FASB issued additional guidance (ASUs 2015-14; 2016-08; 2016-10; 2016-12; 2016-13; 2016-20). The adoption of this guidance by the Company, effective July 1, 2018, did not have a material impact on the Company’s consolidated financial statements (see Revenue Recognition, for further detail). In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments, which provides guidance on reducing the diversity in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. In addition to other specific cash flow issues, ASU 2016-15 provides clarification on when an entity should separate cash receipts and cash payments into more than one class of cash flows and when an entity should classify those cash receipts and payments into one class of cash flows on the basis of predominance. The new guidance is effective for the fiscal years beginning after December 31, 2017, and interim periods within those fiscal years. Early adoption is permitted including an adoption in an interim period. The adoption of this ASU is not expected to have a material impact on our consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted In 2016, the FASB issued ASU 2016-02, Leases (“ASU 2016-02”). ASU 2016-02 requires a lessee to recognize a lease asset representing its right to use the underlying asset for the lease term, and a lease liability for the payments to be made to lessor, on its balance sheet for all operating leases greater than 12 months. ASU 2016-02 will be effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The new standard became effective for us on July 1, 2019, and will be adopted using the modified retrospective method through a cumulative-effect adjustment directly to retained earnings as of that date. Based on our preliminary analysis, we expect the new standard to increase right-of-use assets and the lease liability by approximately $2.7 million and $2.7 million, respectively. The cumulative-effect adjustment to retained earnings is expected to be immaterial. On June 20, 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2018-07, Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting. ASU 2018-07 is intended to reduce the cost and complexity and to improve financial reporting for share-based payments to nonemployees for goods and services. The amendments in ASU 2018-07 are effective for fiscal years beginning after December 15, 2018, including interim periods therein.

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