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Battery Management System Module from Japan

Li-ion battery management system (BMS) module with cell balancing and protection functions for 4S packs. Classified HTS 8543.70.98 as electrical apparatus for battery monitoring, balancing, and safety control. Monitors voltage, current, temperature.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

UN38.3 transportation and cell chemistry compatibility docs

Overcharge/overdischarge voltage thresholds specification

Complete battery vs BMS module critical distinction