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Revenue (Tables)
 6 Months Ended
Jun. 30, 2026
Revenue from Contract with Customer [Abstract]  
Schedule of Composition of Revenue The table below shows the composition of revenue from customers, as disaggregated by type of arrangement in accordance with Topic 606, and other revenue, which consisted of government grants that were accounted for following the accounting standards from International Accounting Standards 20, Accounting for Government Grants and Disclosure of Government Assistance (in thousands).
Three months ended June 30,Six months ended June 30,
2026202520262025
Revenue from customers:
Sale of battery products$34,032 $14,542 $62,368 $25,526 
Customization design services— 325 — 325 
Other revenue – government grants— 200 200 500 
Total revenue$34,032 $15,067 $62,568 $26,351