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Document and Entity Information
Jan. 09, 2024
Document And Entity Information [Line Items]  
Amendment Flag false
Entity Central Index Key 0001789029
Document Type 8-K
Document Period End Date Jan. 09, 2024
Entity Registrant Name Aeva Technologies, Inc.
Entity Incorporation State Country Code DE
Entity File Number 001-39204
Entity Tax Identification Number 84-3080757
Entity Address, Address Line One 555 Ellis Street
Entity Address, City or Town Mountain View
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94043
City Area Code (650)
Local Phone Number 481-7070
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock 0.0001 Par Value Per Share 2 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title Common stock, $0.0001 par value per share
Trading Symbol AEVA
Security Exchange Name NYSE
Warrants To Purchase One Share Of Common Stock 1 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title Warrants to purchase one share of common stock
Trading Symbol AEVA.WS
Security Exchange Name NYSE