3 Series 40A 18650 Lithium Battery Protection Board 11.1V 12.6V with Balance for Drill Motor Lipo Cell Module

Description

1. 3 Series (3S) Configuration: The “3 Series” designation means that this protection board is designed for a battery pack consisting of three cells connected in series. Each cell typically has a nominal voltage of 3.7V, resulting in a total nominal voltage of 11.1V for the 3S pack.
2. 40A Current Rating: The protection board is rated to handle a maximum continuous discharge current of 40 amperes (40A). This rating is important for applications like drill motors, which may require high current output.
3. Overcharge Protection: The board includes overcharge protection circuitry, which monitors the voltage of each cell and prevents any cell from reaching an unsafe voltage during charging. Overcharging can damage or even pose safety hazards for lithium batteries.
4. Overdischarge Protection: Overdischarge protection prevents any cell from dropping to a voltage level that could damage the battery. It cuts off the discharge when the cell voltage drops below a safe threshold.
5. Balancing Function: Many 3S protection boards have a balancing function that ensures all cells in the battery pack have similar voltage levels. This is important for prolonging the overall battery pack’s life and maintaining its capacity.
6. Short-Circuit Protection: The protection board typically includes short-circuit protection to prevent damage in the event of a short circuit in the battery pack or connected devices.
7. Temperature Protection: Some protection boards include temperature sensors to monitor the battery’s temperature and prevent overheating.
8. Cell Voltage Monitoring: The board monitors the voltage of each individual cell within the battery pack to ensure they stay within safe limits.
9. Applications: These protection boards are commonly used in various applications, including power tools like drill motors, RC (radio-controlled) vehicles, portable electronics, and more.
10. Screw Terminals or Connectors: The board often has screw terminals or connectors for easy and secure connection to the battery pack and the load.
11. Compatibility: Ensure that the protection board is compatible with the specific battery chemistry (Li-ion or LiPo) and voltage (3S) of your battery pack.