The Peak of High-Voltage Management: Industrial-Scale 32S Control with Active 2A Precision.

JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS

(18 customer reviews)

The JK-B2A32SRP is an advanced “Relay Version” Smart BMS tailored for 8S to 32S battery configurations. It delivers a robust 300A charging current and supports massive discharge rates through its external relay-compatible design. Featuring an industry-leading 2A active balancer, it proactively keeps high-voltage strings perfectly matched. With integrated Bluetooth, CAN, and RS485 communication, it is the premier choice for 96V powerwalls and professional EV builds.

Price range: $248.50 through $274.48

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product description

Industrial-Grade High-Voltage Control with the B2A32SRP The JK-B2A32SRP is engineered to be the command center for high-voltage energy systems. Unlike standard BMS units that are limited to 24S, this model extends its reach to 32S strings, allowing for stable operation at 96V or higher. Because it features a 2A active balancer, it handles the high data density of 32 cells with ease, transferring energy from high-voltage cells to low-voltage ones to prevent premature pack degradation. This proactive balancing ensures your investment reaches its full cycle life.

Why Choose the JK-B2A32SRP?

  • Massive 32S Compatibility: This BMS is specifically designed for high-series setups. Whether you are running a 72V, 84V, or 96V system, the B2A32SRP provides the precision monitoring required for high-voltage safety.

  • Proactive 2A Active Balancing: Large cell strings are prone to voltage drift. The 2A active balancing current is powerful enough to correct imbalances in high-capacity cells quickly, ensuring maximum usable energy from every charge.

  • Relay-Based Architecture: As a relay-version BMS, it uses an external shunt for current sensing. This design allows for extreme high-current handling that exceeds the limits of internal MOSFETs. Consequently, it is ideal for heavy-duty traction motors and large solar arrays.

  • Cold-Weather Ready: The integrated heating function allows the BMS to manage battery heaters. This process ensures your lithium pack can charge safely even in sub-zero temperatures, making it a “four-season” solution for off-grid cabins and RVs.

JKBMS-Specifications

additional information

Series

8-32S

Balance Current

2A

Continuous Discharge

300A

Communication

ACC, Bluetooth, CAN, Display, Heating Function, RS485, UART

product reviews

18 reviews for JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS

Customer photos and videos

Image #1 from Carlos Mendoza
Image #1 from Robert Miller
Image #1 from Elena Rodriguez
Image #1 from Carlos Mendoza

Carlos Mendoza

Excelente BMS para sistemas de gran capacidad. Lo instalé en mi banco de baterías solar de 24V y el balanceo activo de 2A es una maravilla, mantiene las celdas perfectamente alineadas. La aplicación móvil funciona genial y permite monitorear las temperaturas con mucha precisión. La calidad de los componentes es brutal. Muy satisfecho con la compra.

Image #1 from Robert Miller

Robert Miller

The B2A32SRP is an absolute beast for high-voltage systems. I’m running it on a 32S configuration, and the stability is unmatched. Supporting up to 300A continuous discharge while maintaining 2A active balancing is exactly what we needed for our industrial backup bank. The heat dissipation on this relay-style unit is excellent even under sustained heavy loads.

Image #1 from Elena Rodriguez

Elena Rodriguez

I’ve used many BMS units, but none handle 32S LiFePO4 as smoothly as this. The 2A active balancer is essential for cells this large—it keeps everything within 5mV effortlessly. Integration with my inverter via CANbus was seamless. If you are building a serious high-voltage battery, this is the hardware you want protecting your investment.

Image #1 from Carlos Mendoza
Image #1 from Robert Miller
Image #1 from Elena Rodriguez
4.8 Rating
With media
1-5 of 18 reviews
  1. Our company uses it to build a forklift battery; we first connect two cells in parallel and then connect 32 of these pairs in series, for a total of 64 cells.

  2. Nice finish on products, service is outstanding.

  3. Très bon matériel. Arrived fast and works perfectly on my 16S setup. The Bluetooth connection is rock solid and the app displays everything clearly. Excellent active balancing for large capacity cells, highly recommended!

  4. Easy to communicate, supplier is very honest.

  5. Excelente BMS para sistemas de gran capacidad. Lo instalé en mi banco de baterías solar de 24V y el balanceo activo de 2A es una maravilla, mantiene las celdas perfectamente alineadas. La aplicación móvil funciona genial y permite monitorear las temperaturas con mucha precisión. La calidad de los componentes es brutal. Muy satisfecho con la compra.

    Image #1 from Carlos Mendoza
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JK BMS B2A32SRP |  300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS JK BMS B2A32SRP | 300A Continuous Discharge | 2A Active Balancer | 8S-32S LiFePO4/Li-ion/LTO Smart BMS
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