BMS NMC 2S 4A (JLGW) (073f)

JLGW BMS NMC 2S 4A Hardware

Product Data Sheet

Whether you're a DIY enthusiast building your own battery packs, or a professional assembling modular power banks, the BMS NMC 2S 4A (JLGW) gives you peace of mind with every charge cycle. Feel confident that your lithium-ion system is being managed intelligently by a high-quality protection circuit. Designed with care, engineered with precision — this BMS reflects true battery stewardship.

Key Features

• •Reliable Safety Assurance: Integrated overcharge, over-discharge, overcurrent, and short-circuit protection circuits ensure your battery remains safe during both charging and discharging.
• •Simple Integration: With pre-attached nickel strips, this board is ready to be easily spot-welded into your pack without additional hardware.
• •Compact Size, Powerful Functionality: Optimized for low to moderate power applications, this BMS supports up to 4A continuous current, ideal for portable electronics and tools.
• •Longer Battery Lifespan: Helps preserve battery health by controlling voltage fluctuations and limiting current stress.

Technical Specifications

Feature	Details
Battery Type	NMC (Lithium-ion 2S – 7.4V)
Series Supported	2S (2 cells in series)
Nominal Voltage	7.4V
Rated Current	4A (Continuous)
Overcharge Protection	4.25 ± 0.05V per cell
Over-discharge Cutoff	2.75 ± 0.05V per cell
Overcurrent Protection	Approx. 6A
Short Circuit Protection	Yes – Instant Cutoff
Operating Temp.	-20°C to 60°C
Self-Consumption	<30μA
PCB Dimensions	Ultra-slim profile with pre-welded tabs
Nickel Strip	Included and spot-weldable

Ideal Applications

• •Custom 2-cell 18650 or 21700 battery packs
• •Portable fans and flashlights
• •Wireless camera or sensor modules
• •DIY power supply units
• •Smart wearable power banks
• •Handheld battery-operated tools

The PCM NMC 02S/4A (JLGW) is a Battery Protection Circuit Module (PCM) designed for 2 series Nickel Manganese Cobalt (NMC) battery packs, supporting a 4A continuous discharge current. This module is ideal for low-power applications such as small energy storage systems, backup power solutions, and portable electronic devices. It provides essential protection features including overcharge, over-discharge, overcurrent, short circuit, and temperature protection, ensuring the safe and reliable operation of the battery. The JLGW designation refers to the specific manufacturer or design. The PCM helps maintain balanced voltage across the battery cells, optimizing performance and extending the overall lifespan of the battery pack.