
Description
This 3S BMS (Battery Management System) protection board is designed for 3 series lithium-ion (Li-ion) or lithium polymer (LiPo) cells, typically used in power tools like drill motors or other battery-powered devices. It provides essential protection to 18650 lithium-ion batteries by preventing overcharging, over-discharging, and short circuits. This BMS ensures that your batteries remain safe and functional over time, while also optimizing their lifespan.
Specifications:
| Model | 3S 20A BMS Protection Board |
| Battery Configuration | 3S (3 Series Li-ion or LiPo cells) |
| Nominal Voltage | 12.6V (for 3S pack) |
| Maximum Continuous Current | 20A |
| Charging Voltage | 12.6V (for 3S battery pack) |
| Overcharge Voltage | 4.2V per cell |
| Over-discharge Voltage | 2.5V per cell |
| Overcurrent Protection | Yes |
| Short Circuit Protection | Yes |
| Battery Type Compatibility | 18650 Li-ion, LiPo |
| Dimensions | 64mm x 20mm x 3.4mm |
| Board Type | PCB (Printed Circuit Board) |
| Operating Temperature Range | -40°C to 85°C |
| Protection Features | Overcharge, Over-discharge, Overcurrent, Short-circuit |
| PCB Material | High-quality fiberglass |
| Usage | For power tools, drill motors, and battery-powered devices |
Key Features:
- Wide Compatibility: Designed for 3S Li-ion or LiPo battery packs, typically used in power tools and other high-drain devices.
- High Current Handling: Capable of handling up to 20A of continuous current, ensuring high power demands such as drills are supported.
- Battery Protection: Safeguards against overcharging, over-discharge, overcurrent, and short circuits, ensuring safe operation and prolonged battery life.
- Compact Size: Small form factor (64mm x 20mm x 3.4mm), suitable for integration into compact battery-powered projects.
- High-Quality PCB: Made from high-grade fiberglass for durability and reliability during operation.
- Efficient Performance: Protects batteries from damage caused by improper usage, which is crucial for maintaining performance over time.
Application:
- Power Tools: Perfect for use in cordless drills and other high-drain tools requiring a 12.6V lithium battery pack.
- DIY Projects: Ideal for powering custom-built devices that use 3S Li-ion or LiPo batteries.
- Battery-Powered Devices: Useful in a variety of applications such as electric vehicles, robotics, and backup power systems.
- Energy Storage Systems: Can be used in home energy storage or portable battery packs to ensure safe charging and discharging.





