Features: Ensures power management with 18650 Battery 4S 14.8V Lithiums Battery Protections Board, to support four series connecteds 18650 Lithiums batteries, providing stable 14.8V output for high voltages equipment. Featuring balanced charging, overcharge/over discharge protections, short circuits protections, and temperature monitoring, this PCB board ensures safe and efficient operations while extending battery. for electronics enthusiasts, electric tool manufacturers, and electric vehicle and robot designers power. Perfect for use in portable devices like LED lights, and wireless speakers, as well as high power tool and home systems requiring consistent energy supply. With high current capacity of up to 15A, this Protections board meets the demands of high energy density applications, ensuring your projects powereds safely and effectively. Specifications: Material: PCB board Size: 3.6cm/1.42inch Package Includes: 1PC 4 String Battery Protections Board note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.