JK 24S 40A Smart BMS with 400mA Active Balancing

Build a lithium battery pack with the JK 24S 40A Smart Battery Management System (BMS), designed for compatible battery configurations and active cell balancing.

The manufacturer-matched JK-BD4A24S4P model supports up to 24 series cells for Li-ion and LiFePO4 battery configurations. It features a 40A continuous discharge rating and 400mA active balancing current.

Bluetooth monitoring is supported on the manufacturer-listed model, allowing users to connect through the JK BMS mobile application to view battery status and configure supported settings.

Key Features

• Model: JK-BD4A24S4P

• Battery string support: Up to 24S; chemistry-specific minimum cell count applies

• Continuous current: 40A

• Active balancing current: 400mA

• Balancing method: Active balancing

• Bluetooth: Built-in Bluetooth support

• Cell voltage detection: 1–5V

• Cell voltage accuracy: ±5mV

• Short-circuit protection: Supported

• Connection method: Same-port charge/discharge

Technical Specifications

Important Compatibility Note

Choose the BMS according to the exact battery chemistry, series-cell count, current requirements, and wiring configuration. Do not connect a battery pack until its configuration has been checked against the manufacturer’s instructions.

Related Products

Explore compatible battery-building supplies:

• 18650 Lithium-Ion Cell

• Battery Cells Collection

These are related battery products. Their compatibility with this specific BMS is not confirmed by the links alone.