Optimize your battery charging needs with this advanced Li-ion Battery Charger Module designed for efficient and safe charging of 3-section (3S) Li-ion batteries with a 12.6V charging voltage. Engineered with a high switching frequency of up to 1MHz, this charger compensates for voltage loss in quasi-constant voltage (quasi-CV) mode, ensuring stable and reliable charging performance. Key Features: · High-Frequency Switching up to 1MHz: Enhances charging efficiency by compensating voltage loss, enabling faster and more stable battery charging. · Automatic Internal Resistance Compensation: Features automatic charging adjustment for battery internal resistance and tracking resistance, optimizing charging accuracy. · Comprehensive Protection System: Safeguards batteries with protection against voltage dropping below the input voltage, battery short circuit, over-voltage, and limited drive capacity, providing strong adaptability to a variety of input power conditions and ensuring battery safety. · Durable Construction: Built from high-quality materials that ensure strength and longevity, offering a reliable charger module with an extended service life. · Compact and Portable Design: Small size and lightweight construction make it easy to carry, store, and integrate into various projects with convenient use and excellent performance. Specifications: · Item Type: Li-ion Battery Charger Module · Battery Configuration: 3 Sections (3S) · Charging Voltage: 12.6V · Input Voltage: DC 3V – 6V (Recommended DC 3.7V/5V) · Input Current: 4A (4A version) · Charging Current: 1.48A (4A version) Package Includes: · 1 x Li-ion Battery Charger Module Designed for hobbyists and electronics professionals, this Li-ion Battery Charger Module offers reliable, efficient, and safe charging for 3S Li-ion batteries. Its compact size combined with advanced charging technology makes it an essential component for battery maintenance, DIY electronics, and portable power applications.