20S 50A JBD Li-ion Smart BMS 

Product Description:

The 20S 50A JBD Li-ion Smart BMS is a high-performance Battery Management System designed for 72V lithium-ion battery packs (20 cells in series). This smart BMS offers real-time monitoring, passive balancing, and comprehensive protection features. It supports communication protocols including UART, RS485, and optional Bluetooth, making it ideal for applications requiring smart control, remote monitoring, and reliable battery safety.

Key Features:

• Designed for 20S (72V nominal) Li-ion battery packs

• 50A continuous discharge current

• Smart communication via UART, RS485, and Bluetooth (with external module)

• Full protection: overcharge, over-discharge, overcurrent, short circuit, and temperature

• Passive balancing improves cell longevity and consistency

• Supports multiple NTC temperature sensors

• System configuration, fault logging, and data viewing via PC or mobile app

• EEPROM for data storage and protection settings

Technical Specifications:

• Battery Type: Lithium-ion (3.7V nominal per cell)

• Series Configuration: 20S

• Nominal Voltage: 72V

• Maximum Charge Voltage: 84.0V (4.2V × 20 cells)

• Continuous Discharge Current: 50A

• Balance Current: ~30–60mA

• Overcharge Protection Voltage: ~4.20V ± 0.025V per cell

• Overdischarge Protection Voltage: ~2.8V ± 0.08V per cell

• Overcurrent Protection: Configurable via software

• Short Circuit Protection: Yes

• Temperature Protection: Yes (NTC supported)

• Communication Ports: UART / RS485 / Bluetooth (module required)

• Software Support:

  • PC Software: via USB-to-UART adapter

  • Android App: via Bluetooth module

• Operating Temperature: -20°C to +70°C

Applications:

• Electric bikes, scooters, and light electric vehicles

• Solar and renewable energy battery storage systems

• DIY 72V lithium-ion battery projects

• Portable backup power and UPS systems

• Smart energy management and IoT-enabled battery systems