Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2018
Apr. 01, 2019
Jun. 30, 2018
Document And Entity Information      
Entity Registrant Name Polar Power, Inc.    
Entity Central Index Key 0001622345    
Document Type 10-K    
Trading Symbol POLA    
Document Period End Date Dec. 31, 2018    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Entity a Well-known Seasoned Issuer No    
Entity a Voluntary Filer No    
Entity's Reporting Status Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Emerging Growth Company true    
Entity Small Business true    
Entity Ex Transition Period true    
Entity Shell Company false    
Entity Public Float     $ 23,965,548
Entity Common Stock, Shares Outstanding   10,143,158  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2018