BMS NMC 4S 20A WITH BALANCE (JLGW) (04b5)

JLGW BMS NMC 4S 20A Hardware

Product Data Sheet

The BMS NMC 4S 20A WITH BALANCE by JLGW is a powerful and intelligent battery management solution designed to handle demanding 4-cell (4S) lithium-ion (NMC) packs. Supporting a continuous discharge current of 20A, this system is built with advanced protection features and cell balancing technology for optimal performance, safety, and reliability. It’s an excellent choice for electric tools, e-bikes, robotic kits, and more.

Key Features

• •Supports up to 20A Continuous Discharge
• •Active Cell Balancing for Longer Battery Life
• •Built-In Thermal Cutoff and Short Circuit Protection
• •Fast, Efficient Power Delivery
• •Smart Chip for Auto Monitoring & Control

Specifications

Parameter	Details
Model	BMS NMC 4S 20A WITH BALANCE (JLGW)
Battery Type	Lithium-Ion (NMC - 3.7V per cell)
Configuration	4S (4 Series Cells)
Nominal Voltage	14.8V
Max Charge Voltage	16.8V
Charge Current	10A
Discharge Current	20A (Continuous)
Balancing	Yes – Passive Balancing Function
Balance Current	42mA typical
PCB Color	Blue Aluminum Heat-Sink Layer
Protection	Overcharge, Over-discharge, Short-circuit, Overcurrent, Temperature
Operating Temp	-20°C to +60°C
Dimensions	Compact Slim Module
Connectors	JST Balance Connector, B+/B- terminals

Applications

• •E-bike Battery Packs
• •Power Tool Battery Modules
• •DIY Robotics and Automation Projects
• •Portable Medical Devices
• •Solar Energy Storage Systems
• •UPS & Backup Battery Packs

The PCM NMC 04S/20A is a Battery Protection Circuit Module (PCM) designed for 4 series Nickel Manganese Cobalt (NMC) battery packs, supporting a 20A continuous discharge current. This module is suitable for moderate-power applications, such as small energy storage systems, backup power solutions, and portable devices. It offers essential protection features, including overcharge, over-discharge, overcurrent, short circuit, and temperature protection, ensuring the safe and reliable operation of the battery. Additionally, it helps balance the cells, maintaining uniform voltage levels across the battery pack and enhancing its overall performance and lifespan.