| Document And Entity Information | 12 Months Ended |
| Dec. 31, 2022 | |
| Document Information Line Items | |
| Entity Registrant Name | SAI.TECH GLOBAL CORPORATION |
| Document Type | POS AM |
| Amendment Flag | true |
| Amendment Description | SAI.TECH Global Corporation is filing this Post-Effective Amendment No. 2 to its registration statement on Form F-1 on Form F-3 (File No. 333-265333) as an exhibits-only filing. Accordingly, this amendment consists only of the cover page, this explanatory note, Item 9 of Part II of the Registration Statement, the signature page to the Registration Statement and the filed exhibit. The remainder of the Registration Statement is unchanged and has therefore been omitted. |
| Entity Central Index Key | 0001847075 |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Incorporation, State or Country Code | E9 |
