2S 5A 18650 Lithium-ion Battery Protection Board - 2S 5A Battery Management System Module

Our 2S 5A BMS Protection Board is specifically engineered to provide comprehensive protection to 2-cell (7.4V nominal) 18650 lithium-ion battery packs. It integrates advanced features such as overcharge, over-discharge, over-current, and short circuit protection. With its in-built MOSFETs and high-precision voltage detection circuits, this module guarantees both safety and longevity for your battery.

Key Features

• High-precision voltage detection for each cell
• Triple overcurrent detection circuit for enhanced safety
• Supports 3.7V lithium-ion battery cells in 2S configuration
• Ultra-low standby current for extended battery life
• Compact design, perfect for applications with limited space

Technical Specifications

• Charging Voltage Range: 8.4V – 9V
• Overcharge Protection: 4.25V – 4.35V ±0.05V
• Over-discharge Protection: 2.5V – 3.0V ±0.05V
• Maximum Continuous Discharge Current: 5A
• Limit Instantaneous Current: 7A
• Operating Voltage: 7.4V (2S)

Soldering Instructions

• B+: Connect to battery pack positive terminal
• B-: Connect to battery pack negative terminal
• MB: Connect to the joint between cell 1 and cell 2
• P+: Positive terminal for charging/discharging
• P-: Negative terminal for charging/discharging

Package Includes

• 1 × 2S 5A Li-ion Battery Protection Board (BMS)

Perfect for DIY 2S lithium-ion battery packs, this BMS module is an ideal choice for portable electronics, robotics, and IoT projects. Whether you're an electronics engineer or a hobbyist, this module offers a reliable solution for managing your battery's health and longevity.