Choose Your Pack: Available in 1, 2, or 4-pack options Enhance Your Project's Power: Whether you're a DIY enthusiast or a professional, our Lithium Battery Protection Board is designed to provide reliable and efficient power management for your high-demand applications. Key Features: Optimal Charging Range: Enjoy a safe and efficient charging experience with a voltage range of DC 12.6V to 13.6V. High Discharge Capability: With a maximum continuous discharge current of 40A, this board is capable of handling high-power applications. Note: Ensure adequate cooling to maintain optimal performance. Versatile Compatibility: Ideal for a variety of lithium batteries (18650, 26650, polymer lithium) with a nominal 3.7V and full charge at 4.2V. Perfect for projects up to 170W. Safety and Efficiency: Smart Design for Drill Startups: Requires 3 batteries with 10C-20C power or 6 batteries with 5C-10C power. Reliable Wiring: For secure connections, use copper wire of 12AWG or more. Follow the detailed diagram for correct setup. Resistor Monitoring: The "430" resistor prevents overcharging by heating up when voltage exceeds 4.2V, ensuring your setup remains safe. What's Included: Up to four 3-String 12.6V 40A Lithium Battery Protection Boards, depending on your selected pack size. Ideal for Your Power Needs: Whether you're building custom solar generators, upgrading your home energy system, or working on innovative tech projects, our protection board delivers the performance and reliability you need.