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Balances and Transactions with Related Parties (Details) ¥ in Millions, $ in Millions			6 Months Ended
	Sep. 27, 2023 USD ($)	Sep. 27, 2023 CNY (¥)	Jun. 30, 2025 USD ($)
Related Party Transaction [Line Items]
Purchase price	$ 35.7	¥ 260.0
Currently interest holds percentage	97.00%	97.00%
Zhejiang Shengyang [Member]
Related Party Transaction [Line Items]
Equity interest percentage	26.00%	26.00%
Purchase price	$ 3.9	¥ 28.6
Fuzhou BAK Battery Co., Ltd. [Member]
Related Party Transaction [Line Items]
Equity interest percentage			51.00%
Zhengzhou BAK Electronics Co., Ltd. [Member]
Related Party Transaction [Line Items]
Equity interest percentage			95.00%
Repaid (in Dollars)			$ 0.2
Zhengzhou BAK Battery Co., Ltd [Member]
Related Party Transaction [Line Items]
Repaid (in Dollars)			$ 1.2
Shenzhen BAK Battery Co., Ltd [Member]
Related Party Transaction [Line Items]
Subsidiary, Ownership Percentage, Parent	5.00%	5.00%

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Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

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