About this item

The 3 Series 20A 18650 Lithium Battery Protection Board is a compact and efficient Battery Management System (BMS) designed for 3S lithium-ion battery packs, typically comprising three 18650 cells. Operating within a nominal voltage range of 11.1V to 12.6V, this board ensures safe and balanced charging and discharging, making it ideal for applications such as power tools, LED lights, and low-power inverters. Equipped with low-resistance MOSFETs, the board supports continuous discharge and charge currents up to 20A, facilitating high-power applications. It also features an automatic recovery function, restoring the board after overcharge or short-circuit events, thereby enhancing reliability. The protection board includes a balance function, ensuring uniform voltage distribution across all cells, which is crucial for maintaining battery health and longevity. With dimensions of approximately 59mm x 20mm x 3.4mm, the board is designed for easy integration into compact battery packs. It is compatible with various lithium battery types, including 18650, 26650, and polymer lithium batteries, provided they meet the required specifications. This protection board offers an affordable solution for safely managing 3S lithium battery packs, ensuring optimal performance and extended battery life.