5S 18.5V 20A BMS 18650 Lithium Battery Protection Board Suitable for Drill Tools

The 5S 18.5V 20A BMS 18650 Lithium Battery Protection Board is specifically designed for electric power tools using 5 series Li-ion batteries. It features a specialized IC for real-time monitoring of voltage, charge and discharge currents, and ambient temperatures. This BMS offers stable protection functions including overcharge, over-discharge, and short circuit protection. With low power consumption and robust protection features, it ensures the longevity and safety of your batteries. Compact in size (46 x 40 mm), it is easy to integrate into various devices.

Specifications of 5S 18.5V 20A BMS 18650 Lithium Battery Protection Board

• Operation Voltage: 18.5V

• Operation Current: 8-20A

• Dimensions: 46 x 40 mm

• Charge Voltage: 21V

• Single Cell Charge Voltage: 4.25V

• Overcharge Protection:

  • Overcharge Single Cell Detection Voltage: 4.25V

  • Overcharge Protection Delay: 1S

  • Overcharge Single Cell Recovery Voltage: 4.13V

  • Overcharge Protection Release Delay: 1mS

• Over-discharge Protection:

  • Over-discharge Single Cell Detection Voltage: 2.8V

  • Over-discharge Protection Delay: 1S

  • Over-discharge Single Cell Recovery Voltage: 3.0V

  • Over-discharge Protection Release Delay: 100±20mS

• Over-current Protection:

  • Over-current Detection Voltage: 0.4V

  • Over-current Detection Current: 30±5A

  • Over-current Detection Delay: 1S

  • Recovery State: Auto

• Short Circuit Protection: Yes

  • Short Circuit Detection Delay: 250uS

  • Short Circuit Release Delay: 1S

  • Short Circuit Detection Voltage: 0.8V

  • Recovery State: Auto after Disconnect Load

• Over Temperature Protection:

  • Protection Temperature: 70±5°C

  • Recovery Temperature: 55±5°C

• Power Consumption:

  • Working State: 25uA (25°C)

  • Stand-by State: 6uA (25°C)

• Internal Resistance: 30±5mΩ

• Temperature:

  • Operating Temperature: -40°C to 85°C, RH≤75%

  • Store Temperature: -40°C to 125°C, RH≤75%