JLGW BMS LFP 2S 4A

JLGW BMS LFP 2S 4A Hardware

Product Data Sheet

The BMS LFP 2S 4A (JLGW) is a compact, lightweight and efficient Battery Management System (BMS) specifically designed for 2S (2-cell) LiFePO4 (LFP) battery packs. Engineered to offer protection, performance, and reliability, this BMS module is ideal for small-scale battery applications such as electric toys, solar lights, handheld electronics, and portable storage systems.

Key Features

• •Support for 2S LFP Cells (6.4V Nominal Voltage)
• •4A Continuous Discharge Current
• •Built-In Nickel Strips for Direct Spot Welding
• •Protection Functions:
• •Overcharge protection
• •Over-discharge protection
• •Overcurrent protection
• •Short circuit protection
• •Balanced Charging Capabilities
• •Compact Layout with High Thermal Efficiency
• •Low Power Standby Current

Technical Specifications

Specification	Details
Battery Type	LiFePO4 (LFP)
Series Supported	2S (2 cells in series)
Rated Current	4A
Overcharge Protection	3.75V ± 0.05V per cell
Over-discharge Limit	2.0V ± 0.1V per cell
Overcurrent Protection	≥ 6A
Short Circuit Protection	Yes (Auto Recovery)
Operating Temp Range	-20°C to 60°C
Board Dimensions	Ultra-compact with nickel strip mount
Mounting Type	Weldable with nickel strips
Manufacturer	JLGW (High-quality precision electronics)

Applications

• •Small-scale battery packs for IoT devices
• •Battery-powered lighting systems
• •Custom DIY LFP battery builds
• •Robotics and hobbyist kits
• •Solar garden lights and emergency packs

The PCM LFP 02S/4A (JLGW) is a Battery Protection Circuit Module (PCM) designed for 2 series Lithium Iron Phosphate (LFP) battery packs, supporting a 4A continuous discharge current. This module is suitable for moderate power applications such as small energy storage systems, backup power solutions, and portable devices. It provides essential protection features including overcharge, over-discharge, overcurrent, short circuit, and temperature protection, ensuring safe and reliable battery operation. The JLGW designation refers to a specific manufacturer or design. This PCM helps maintain battery health by balancing the voltage across cells, optimizing performance, and extending the battery pack's lifespan.