Revenue - Schedule of Composition of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 679	$ 2,110
Total revenue from customers
Disaggregation of Revenue [Line Items]
Revenue	470	2,110
Sale of battery products
Disaggregation of Revenue [Line Items]
Revenue	470	605
Customized design services
Disaggregation of Revenue [Line Items]
Revenue	0	1,505
Other revenue – government grant
Disaggregation of Revenue [Line Items]
Revenue	$ 209	$ 0