The JK-B2A20S20P Smart Battery Management System (BMS) is a high-performance 200A Active Balance BMS featuring a powerful 2A Active Cell Balancer for faster and more accurate cell balancing
Designed for 8S–20S lithium battery packs, it supports Bluetooth APP monitoring, LCD Display, and intelligent protection, making it ideal for solar energy storage, inverter batteries, electric vehicles, UPS systems, and DIY lithium battery packs
Product Highlights
✅ Model: JK
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Product Description
Short Product Description
The JK-B2A20S20P Smart Battery Management System (BMS) is a high-performance 200A Active Balance BMS featuring a powerful 2A Active Cell Balancer for faster and more accurate cell balancing. Designed for 8S–20S lithium battery packs, it supports Bluetooth APP monitoring, LCD Display, and intelligent protection, making it ideal for solar energy storage, inverter batteries, electric vehicles, UPS systems, and DIY lithium battery packs.
Product Highlights
✅ Model: JK-B2A20S20P
✅ Smart Active Balance Battery BMS
✅ 2A Active Cell Balancing
✅ 200A Continuous Charge & Discharge
✅ Supports 8S–20S Battery Packs
✅ Bluetooth APP Monitoring
✅ LCD Display Supported
✅ Supports LiFePO4 / Li-ion / LTO Batteries
✅ Intelligent Battery Protection
✅ High Precision Cell Voltage Monitoring
Product Features
Powerful 2A Active Cell Balancing Technology
200A Continuous Charge & Discharge Current
Supports 8S–20S Battery Packs
Bluetooth Mobile APP Monitoring
LCD Display Compatible
Real-Time Cell Voltage Monitoring
Individual Cell Voltage Monitoring
Battery Temperature Monitoring
Battery Capacity (SOC) Display
High Precision Voltage Sampling
Low Power Consumption Design
Professional Grade Battery Protection
Easy Installation
Stable & Reliable Performance
Technical Specifications
Model: JK-B2A20S20P
BMS Type: Smart Battery BMS
Battery Type: LiFePO4 / Li-ion / LTO
Battery Strings: 8S–20S
Charge/Discharge Current: 200A
Balance Method: Active Balance
Balance Current: 2A
Communication: Bluetooth
Display: LCD Display Supported
Monitoring: Mobile APP + LCD Display
Application: Solar, EV, Inverter & Energy Storage Systems
Protection Functions
Over Charge Protection
Over Discharge Protection
Over Current Protection
Short Circuit Protection
Temperature Protection
Cell Voltage Protection
Active Cell Balancing
Reverse Polarity Protection
Applications
✔️ Solar Energy Storage Systems
✔️ Home Inverter Batteries
✔️ UPS Backup Systems
✔️ Electric Bikes (E-Bike)
✔️ Electric Scooters
✔️ Electric Vehicles (EV)
✔️ DIY Lithium Battery Packs
✔️ RV & Camper Batteries
✔️ Marine Battery Systems
✔️ Portable Power Stations
✔️ 24V, 36V, 48V, 60V & 72V Lithium Battery Packs
Frequently Asked Questions
The JK-B2A20S20P is a high-current Smart Battery Management System (BMS) designed for compatible lithium battery packs. It supports 8S to 20S battery configurations, with a 200A current rating and 2A active cell balancing.
The JK-B2A20S20P supports 8S to 20S lithium battery configurations, making it suitable for a wide range of battery voltage systems.
Yes. It can be used with compatible LiFePO4 (LFP) battery packs when the correct battery chemistry, series configuration and BMS parameters are selected.
Yes. An 8S LiFePO4 battery has a nominal voltage of approximately 25.6V, making the BMS suitable for compatible 24V-class LiFePO4 battery systems.
Yes. A typical 16S LiFePO4 battery has a nominal voltage of approximately 51.2V, and the JK-B2A20S20P supports 16S.
Yes. The 8S–20S support range allows it to be used with various higher-voltage lithium battery configurations. A 20S LiFePO4 battery has a nominal voltage of approximately 64V.
The JK-B2A20S20P is rated at 200A. Actual safe operating current depends on the battery cells, cables, busbars, terminals, connectors, temperature and complete system design.
The 2A active balancing function transfers energy between individual cells to help reduce voltage differences and maintain better balance throughout the battery pack.
The 2A active balancing function can help:
Reduce voltage differences between cells
Improve battery pack balance
Improve usable battery capacity
Maintain more consistent cell voltages
Improve overall battery performance
Provide effective balancing for high-capacity battery packs
No. The 2A active balancing current and 200A current rating are separate specifications. The 2A refers to cell balancing, while 200A refers to the BMS's rated current capability.
Yes. It can be used in compatible solar energy storage, inverter battery and high-current lithium battery systems, provided the battery and complete system are properly designed.
Yes. It can be used in compatible inverter battery systems. The inverter's maximum continuous and peak current requirements should be checked before selecting the BMS.
Yes. It can be used in compatible EV, electric bike and electric mobility battery applications where the voltage, chemistry and current requirements match the BMS specifications.
Yes. It can be suitable for a 200Ah lithium battery, provided that the battery cells and complete system can safely handle the required charging and discharging current.
Yes. Its 200A current rating and 2A active balancing make it suitable for many high-current and high-capacity lithium battery applications when properly configured.
The BMS supports 8S to 20S configurations.
For LiFePO4 batteries, common examples include:
8S = approximately 25.6V nominal
16S = approximately 51.2V nominal
20S = approximately 64V nominal
Individual cells in a series-connected battery pack can develop differences in voltage and state of charge. Active balancing helps reduce these differences by transferring energy between cells.
Yes. The 2A active balancing function provides strong balancing capability and can be useful for compatible high-capacity lithium battery packs. The ideal balancing current depends on cell capacity, cell matching and battery configuration.
Yes. It can be installed in a compatible new lithium battery pack. The battery chemistry, series cell count, current requirements, wiring and BMS settings must be correctly matched.
The BMS is rated at 200A, but a 200A application requires the entire battery system to be designed for the required current. Battery cells, busbars, cables, terminals, connectors, fuses and thermal management must all be appropriately rated.
Yes. A 16S LiFePO4 battery is approximately 51.2V nominal, and the JK-B2A20S20P supports 16S. It can be suitable for a 51.2V 200Ah system when the battery cells and system current requirements are compatible.
Yes. A 20S LiFePO4 battery has a nominal voltage of approximately 64V, and the JK-B2A20S20P supports up to 20S.
The BMS can be used for compatible applications such as:
LiFePO4 battery packs
Solar energy storage
High-power inverter batteries
Home energy storage
EV batteries
Electric mobility systems
High-current lithium battery packs
Custom battery systems
Before purchasing, check:
Battery chemistry
Battery voltage
Number of cells in series
Battery capacity (Ah)
Maximum charging current
Maximum discharge current
Inverter or controller specifications
Required communication features
You can purchase the JK-B2A20S20P 200A / 2A Active Balancer 8S–20S BMS from Voltpro Energy, subject to product availability.
Visit www.voltproenergy.com to check product availability, specifications and purchasing information.
When purchasing, always verify the exact JK-B2A20S20P model, 200A current rating, 2A active balancing and 8S–20S configuration to ensure compatibility with your lithium battery system.
