Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
12 Months Ended
Jun. 30, 2022
Sep. 12, 2022
Dec. 31, 2021
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Jun. 30, 2022    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2022    
Current Fiscal Year End Date --06-30    
Entity File Number 001-31543    
Entity Registrant Name FLUX POWER HOLDINGS, INC.    
Entity Central Index Key 0001083743    
Entity Tax Identification Number 86-0931332    
Entity Incorporation, State or Country Code NV    
Entity Address, Address Line One 2685 S. Melrose Drive    
Entity Address, City or Town Vista    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92081    
City Area Code 877    
Local Phone Number 505-3589    
Title of 12(b) Security Common Stock, par value $0.001 per share    
Trading Symbol FLUX    
Security Exchange Name NASDAQ    
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 Public Float     $ 48,910,000
Entity Common Stock, Shares Outstanding   15,998,336  
Documents Incorporated by Reference [Text Block] None    
ICFR Auditor Attestation Flag false    
Auditor Firm ID 23    
Auditor Name BAKER TILLY US, LLP    
Auditor Location San Diego, California