1S 12A BMS Battery Protection Board 3.6V for 18650 Li-ion Cell

The 1S 12A BMS Battery Protection Board is designed to provide intelligent protection for a single-cell 18650 lithium-ion battery. It ensures the battery operates safely and efficiently by offering overcharge, over-discharge, overcurrent, and short-circuit protection. Built for 3.6V or 3.7V lithium cells, this compact board is ideal for DIY battery packs, portable electronics, LED flashlights, and small robotics projects.

Key Features

• Provides full protection for single-cell 18650 Li-ion batteries

• Supports up to 12A discharge current

• Protects against overcharge, over-discharge, overcurrent, and short circuit

• High-efficiency MOSFET and IC design

• Compact size, ideal for tight spaces and embedded systems

Technical Details

• Product Name: 1S 12A BMS Battery Protection Board

• Compatible Battery Type: 18650 Li-ion single cell

• Battery Voltage: 3.6V / 3.7V nominal

• Rated Discharge Current: 12A

• Overcharge Detection Voltage: 4.25V ± 0.05V

• Over-discharge Detection Voltage: 2.5V ± 0.05V

• Overcurrent Protection: Yes (≥12A)

• Short Circuit Protection: Yes (automatic recovery)

• Self-consumption Current: < 50μA

• Charging Method: CC/CV (Constant Current/Constant Voltage)

• Material: High-quality FR4 PCB (Flame Retardant) with copper traces and protective coating

• Board Dimensions: Approx. 33mm (L) x 16mm (W) x 3mm (H)

• Weight: Approx. 3g

• Operating Temperature Range: -20°C to +85°C

• RoHS Compliant: Yes

Applications

• DIY 18650 battery packs

• Portable electronics and wearable tech

• Rechargeable LED flashlights

• Backup power systems

• Robotics and embedded battery-powered devices

Why Choose the 1S 12A BMS Battery Protection Board?

The 1S 12A BMS Battery Protection Board offers reliable and compact protection for any single-cell lithium-ion power system. Whether you’re building a portable device or upgrading a battery pack, this BMS ensures safe, efficient charging and discharging with built-in fault protection. Its small footprint and high discharge capacity make it a must-have for makers and engineers.

Package Includes

• 1 x 1S 12A BMS Battery Protection Board 3.6V for 18650 Li-ion Cell