1S 18650 Li-ion Lithium Battery BMS Charger Protection Board for 3.7V Battery

The 1S 18650 Li-ion Lithium Battery BMS Charger Protection Board is a compact and reliable module designed to provide essential protection for 3.7V single-cell 18650 lithium-ion batteries. It ensures safe charging and discharging by preventing overcharge, over-discharge, over-current, and short circuit conditions.

This module integrates a high-precision voltage detection circuit and multi-stage overcurrent protection, making it ideal for DIY battery packs, power banks, LED flashlights, and portable electronics. Its labeled terminal pads (B+, B–, P+, P–) make wiring straightforward for both beginners and professionals.

🔧 Key Features

• Designed for 1-cell 3.7V 18650 lithium-ion batteries
• Provides overcharge, over-discharge, over-current, and short-circuit protection
• High accuracy voltage detection circuit ensures battery safety
• Built-in 3-stage overcurrent detection: OC1, OC2, and short load
• Control via low-resistance MOSFET switching
• Compact size for integration in small battery-powered devices

📐 Technical Specifications

📌 Applications

• Battery protection for DIY 18650 packs
• 3.7V LED flashlights and torches
• Portable electronics and power banks
• Low-voltage IoT projects and gadgets
• Battery-powered hobby electronics

💡 Why Choose This BMS?

This 1S 18650 BMS Protection Board ensures the safety and longevity of your lithium-ion batteries with robust protection mechanisms. It is a compact and cost-effective solution for makers and engineers looking to build safe battery-powered systems.

📦 Package Includes

• 1 × 1S 18650 Li-ion Battery BMS Charger Protection Board