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JK BMS BD4A 20S 80A

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JK BMS BD4A series — active balancing BMS with 0.4A balance current. Supports 8–20S configurations for Li-ion, LiFePO4, and LTO chemistries. Built-in Bluetooth with per-cell voltage monitoring via JK BMS app. Optional RS485 + CAN module add-on. Common-port design.

Specs verified Jul 29, 2026

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