JK BMS V19 16S 48V 100A/150A/200A/300A LiFePO4 Li-ion Battery Protection Board | Built-in & Heat Sink for Solar RV DIY

JK Energy Storage Series BMS Active Balance Protection Board — The "Smart Brain" for Your High-Current Battery Pack

JIKONG Home Energy Storage BMS Full Kit

Introduction:
Whether you are building a home energy storage system, a telecom base station backup, or a solar power station, the lifespan and safety of your battery pack depend entirely on the quality of your BMS. The JK Energy Storage Series is engineered specifically for large-capacity series lithium battery packs. It combines high-precision data acquisition, high-current active balancing, and comprehensive protection. Say goodbye to the heat and inefficiency of passive balancing—our active balancing technology ensures every cell performs at its best.

Available Models (Select Your Variant):

This listing covers the full JK Energy Storage Series. Choose the model that matches your battery pack's continuous current requirement:

          JK-PB1A16S10P (100A) — 1A Active Balance, 100A Continuous Charge/Discharge

          JK-PB2A16S15P (150A) — 2A Active Balance, 150A Continuous Charge/Discharge

          JK-PB2A16S20P (200A) — 2A Active Balance, 200A Continuous Charge/Discharge

          JK-PB2A16S30P (300A) — 2A Active Balance, 300A Continuous Charge/Discharge (High-power model)

          4.3-Inch LCD Display — Optional plug-and-play display for real-time battery data on your dashboard.

Note: The 4.3-Inch LCD Display is an optional accessory. It connects directly to the display interface on the BMS board for on-site monitoring without needing a phone.

Upgraded V19 Version - Added UART & Screw Terminals for Heating

Core Advantages: Why Choose JK Active Balance BMS?Upgraded V19 Version - Added UART & Screw Terminals for Heating

1. High-Current Active Balancing
Utilizing our proprietary energy transfer active balancing technology, this board achieves a maximum continuous balance current of 1A or 2A. Unlike traditional passive balancing, it doesn't waste energy as heat. Instead, it "transfers" energy from high-voltage cells to low-voltage cells. This maximizes battery consistency, extends your driving range, and delays battery aging.

2. Wide Compatibility: 7-16S Configurations
One series fits all mainstream battery types. It perfectly supports Ternary Lithium (7-16S), LiFePO4 (8-16S), and Lithium Titanate (LTO) (14-16S). Whether you are building a 48V or 60V energy storage system, this BMS is up to the task.

3. Smart APP + PC Host Computer Monitoring
Supports both Android and iOS. Via Bluetooth, you can monitor battery status, modify parameters, and control charge/discharge switches directly from your phone. It also supports PC host computer monitoring. Through the RS485 bus, you can parallel monitor up to 16 BMS units simultaneously.

4. Comprehensive Safety Protection
Standard features include charge overvoltage/overcurrent, discharge undervoltage/overcurrent, over-temperature, low-temperature, and short-circuit protection. Plus, an Emergency Switch Function forces charge/discharge for 30 minutes during a fault, preventing dangerous situations like being stranded 

Tailor-made for Home Energy Storage Systems

Function Details:

1. Active Equalization
Users can set the balance trigger pressure difference (mV) in the APP. When the voltage difference between any two strings exceeds the set value, balancing automatically activates. The default balance current is the maximum value, which you can adjust based on your battery capacity in the APP. If balancing is not needed, simply turn it off via the APP.

2. Intelligent Heating Function
Designed for low-temperature environments, the standard heating function (10A design current) automatically warms the battery when temperatures drop, preventing reduced battery activity that can make charging and discharging impossible. We recommend installing a 45°C~65°C normally-closed temperature switch in series as a secondary protection.

3. Communication & Parallel Function

      CAN Communication: Default 250K rate, compatible with mainstream inverter brand protocols.

      RS485 Communication: Dual interfaces. RS485-1 is used for inverter communication; RS485-2 is used for          battery pack parallel connection and host computer monitoring (default baud rate 115200).

      DIP Switch: Supports 0-15 (16 addresses total) for easy multi-unit parallel setup.

4. Intelligent Sleep & Emergency Switch
When the charge/discharge current is less than 1A for 26 consecutive hours, it automatically enters sleep mode to reduce self-consumption. For emergency use, you can activate the emergency switch via the APP to force charge/discharge for 30 minutes.

Four Communication Modes & Mainstream Interfaces

Protocol Docking - Compatible with Mainstream Inverters

Multi-Screen Display & Data Connection

Technical Specifications (Key Parameters):

JK-PB Series Technical Parameters - 100A to 300A

Interface & Wiring Guide:JK-PB Series 16S & 8S Wiring Diagram - Please follow strictly

*P1/P2/P3: UART Display Interface, Interface Board Interface, Activation Signal.

*P4/P5: Display Interface (Supports optional 4.3-Inch LCD display for easy battery information viewing).

*P6-P9: Acquisition Interface (NTC temperature probes + Battery voltage acquisition).

*P10: Heating Interface (Connect to heating film/heater).

*P11: Power Input Positive.

*B-: Connect to Battery Total Negative (M6 screw).

*P-: Connect to External Load or Charger Negative (M6 screw).

4.3-Inch Touch Screen Display - Optional Accessory

Accessories List (Standard Package):

Standard Packing List - Please check all accessories upon receipt

1. BMS × 1

2. Interface Board × 1

3. Adapter Cable B × 1 (Long 30cm)

4. Adapter Cable A × 1 (Long 30cm)

5. RJ45 Network Cable × 1 (Long 40cm)

6. Cells Total B+ Cable × 1 (Long 50cm)

7. Sampling Line A × 2 (Long 90cm)

8. Sampling Line B × 1 (Long 90cm)

9. Sampling Line C × 1 (Long 90cm)

10. Switch × 1 (Long 50cm)

11. Adapter Cable C × 1 (Long 30cm)

12. Heating Adapter Cable × 1 (Long 17cm)

13. Adapter × 1

FAQ:

Q: How do I activate the protection board?
A: The board has no physical power switch; it uses a charging activation mode (charger voltage must be 2V higher than battery voltage). After assembly, connect the charger to power it on. Key activation or display activation (optional) is also supported.

Q: Does it support parallel connection?
A: Yes. Connect via the RS485-2 interface and RJ45 cables. It supports up to 16 BMS units in parallel. Address 0 is the host, and 1-15 are slaves.

Q: What if the short circuit protection triggers when I first connect a load?
A: Some loads have large internal capacitors, causing a high instantaneous current at startup. Simply increase the "Short Circuit Protection Delay" in the APP to resolve this.

Q: Can I use the 4.3-Inch LCD Display with all models?
A: Yes. The 4.3-Inch LCD Display is compatible with all JK-PB series BMS boards and connects to the dedicated display interface (P4/P5)