| Cover | Jun. 25, 2024 |
| Document Information Line Items | |
| Entity Registrant Name | Battery Future Acquisition Corp. |
| Entity Central Index Key | 0001880441 |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Emerging Growth Company | true |
| Document Period End Date | Jun. 25, 2024 |
| Entity Ex Transition Period | false |
| Entity File Number | 001-41158 |
| Entity Incorporation State Country Code | E9 |
| Entity Tax Identification Number | 98-1618517 |
| Entity Address Address Line 1 | 8 The Green |
| Entity Address Address Line 2 | 18195 |
| Entity Address City Or Town | Dover |
| Entity Address State Or Province | DE |
| Entity Address Postal Zip Code | 19901 |
| City Area Code | 929 |
| Local Phone Number | 465-9707 |
| Written Communications | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Soliciting Material | false |
| One Class A Ordinary Share [Member] | |
| Document Information Line Items | |
| Security 12b Title | Units, each consisting of one Class A ordinary share and one-half of one redeemable warrant |
| Trading Symbol | BFAC.U |
| Security Exchange Name | NYSE |
| Class A Ordinary Shares Par Value [Member] | |
| Document Information Line Items | |
| Security 12b Title | Class A ordinary shares, par value $0.0001 per share |
| Trading Symbol | BFAC |
| Security Exchange Name | NYSE |
| Redeemable Warrants [Member] | |
| Document Information Line Items | |
| Security 12b Title | Redeemable warrants, each whole warrant exercisable for one Class A ordinary share, each at an exercise price of $11.50 per share |
| Trading Symbol | BFAC.WS |
| Security Exchange Name | NYSE |
