Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Jun. 30, 2020
Sep. 25, 2020
Dec. 31, 2019
Cover [Abstract]      
Entity Registrant Name Flux Power Holdings, Inc.    
Entity Central Index Key 0001083743    
Document Type 10-K    
Document Period End Date Jun. 30, 2020    
Amendment Flag false    
Current Fiscal Year End Date --06-30    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   11,419,737  
Entity Public Float     $ 11,630,000
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2020