4 Series 30A 18650 Lithium Battery Protection Board 14.8V 16V with Cable

4 Series 30A 18650 Lithium Battery Protection Board

The 4 Series 30A 18650 Lithium Battery Protection Board is designed to manage and safeguard a series of four 18650 lithium batteries, offering robust protection and balanced charging capabilities for a variety of applications.

Key Features

• Battery Configuration: Supports 4S configuration (four batteries in series).
• Continuous Discharge Current: Capable of continuous discharge up to 30A.
• Balanced Current: Provides balanced current output suitable for electric drills, sprayers, LED lights, and low-power inverters.
• Protection Functions:
  • Overcharge Protection: Prevents the batteries from being charged beyond safe limits.
  • Over-discharge Protection: Safeguards against excessive discharge, prolonging battery life.
  • Short Circuit Protection: Automatically disconnects in case of a short circuit.
  • Temperature Protection: Ensures safe operation by monitoring and controlling temperature extremes.
• Integrated Components:
  • Auto Recovery: Automatically recovers from protection states.
  • Low Load Resistance MOS Tube: Integrated for efficient power handling.
• Dimensions: Compact size of approximately 46 x 60 x 3.4 mm for easy installation.

Specifications

• Nominal Voltage: Supports nominal voltages of 3.6V and 3.7V for various lithium battery types including 18650 and polymer lithium batteries.
• Charging Voltage Range: 16.8V to 18.1V.
• Continuous Charge Current: Up to 20A.
• Starting Current: Suitable for starting currents below 80A, ideal for power tools and similar applications.

Usage Notes

• Cooling Requirements: Ensure adequate cooling for optimal performance, especially under heavy load conditions.
• Wiring Instructions: Follow the wiring diagram precisely (0V, 4.2V, 8.4V, 12.6V, 16.8V) to prevent short circuits and ensure proper functionality.
• Motor Load: When using brush motors, consider connecting a non-polar capacitor (25V or higher, 10uF-100uF) across the motor terminals to prevent reverse spikes that could damage MOS tubes.
• Battery Management: Verify that all four batteries in series have similar voltage levels to avoid imbalance during discharge.

Applications

• Electric Drills
• Sprayers
• LED Lights
• Low-Power Inverters
• Portable Power Supplies

Safety Considerations

• Battery Compatibility: Ensure batteries used are compatible with the board’s specifications to avoid damage and ensure optimal performance.
• Current Limitations: Adhere to the maximum continuous discharge current of 30A and avoid exceeding this limit to prevent overheating and potential damage.
• Environmental Conditions: Operate within recommended temperature and humidity ranges for safe and reliable operation.

This 4 Series 30A BMS board offers reliable protection and management for lithium battery packs, making it suitable for demanding applications where both power and safety are critical.