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JK-B2A8S30P Smart BMS 300A (3S-8S) - 2A Active Balancer for 12V/24V LiFePO4 Battery Pack, Golf Cart Upgrade & Massive Solar Build

Engineered with an ultra-low internal loop resistance of just 0.25m, this board safely supports a continuous discharge of up to 300A. It features a robust 2A continuous active balancing current to keep large 3S to 8S lithium cell packs synchronized, even during demanding discharge cycles. Stable Bluetooth connectivity allows for connection to the official App, enabling high-precision battery voltage monitoring with an accuracy of ±3mV. Comprehensive hardware protections are built-in, including a short-circuit response with a 5us delay and strict thermal management. The complete kit contains: 1 Smart BMS (model JK-B2A8S30P), 1 Active Balance Wire, 1 Activation Switch, 1 NTC Sensor, 6 Screws, and 1 User Manual.

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Additional Information
First Listed on Newegg	June 10, 2026

Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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