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Cover
Apr. 19, 2024
Document Information [Line Items]  
Document Period End Date Apr. 19, 2024
Entity Registrant Name FREYR Battery, Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 333-274434
Entity Tax Identification Number 93-3205861
Entity Address, Address Line One 6&8 East Court Square, Suite 300
Entity Address, City or Town Newnan
Entity Address, State or Province GA
Entity Address, Postal Zip Code 30263
City Area Code (678)
Local Phone Number 632-3112
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0001992243
Amendment Flag false
Document Type 8-K
OrdinarySharesWithoutNominalValueMember  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, par value $0.01 per share
Trading Symbol FREY
Security Exchange Name NYSE
WarrantsEachWholeWarrantExercisableForOneOrdinaryShareAtAnExercisePriceOf1150Member  
Document Information [Line Items]  
Title of 12(b) Security Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50
Trading Symbol FREY WS
Security Exchange Name NYSE