4 Series 40A 18650 Lithium Battery Protection Board 14.8V 16.8V with Balance for Drill Motor Lipo Cell Module

Ensure the safety and performance of your 4-cell lithium battery pack with our 4 Series 40A 18650 Lithium Battery Protection Board. This board is designed with various protection functions, including overcharge, over-discharge, overcurrent, and short circuit protection, making it ideal for use in electric drills, sprayers, LED lights, and low-power inverters.

  Key Features:  

• Protection Functions: Overcharge, over-discharge, overcurrent, and short circuit protection
• Continuous Discharge: 40A
• Balanced Current: 100mA
• Scope: Nominal voltage of 3.6V, 3.7V lithium batteries
• Charging Voltage Range: 16.8V to 18.1V
• Operating Temperature: -40°C to +85°C

  Specifications:  

• Battery: 4 Cell
• Overcharge Detection Voltage: 4.25V ± 0.025V
• Over Discharge Detection Voltage: 2.50V ± 0.08V
• Over Current Protection: 40A
• Working Current: 20A
• Length: 60mm, Width: 45mm, Height: 3.5mm
• Weight: 12g

  Package Includes:  

• 1 x 4 Series 40A 18650 Lithium Battery Protection Board 14.8V 16.8V

  Note:  

• The successful start of the drill requires three 15C-20C power batteries or six 10C-15C power batteries (ordinary 18650 batteries cannot start the drill).
• Strictly follow the wiring diagram to avoid short circuits.
• When using brush motor loads, connect a non-polar capacitor to the motor's positive and negative terminals to prevent reverse spikes.
• Ensure that the voltage of each group of batteries in series is the same before use.