Features 1、Precise cut and interface ensure perfect applicability, suitable for installation location and easy to install. 2、The product adopts high-quality materials, effectively avoiding corrosion and wear, durable to use. 3、Professional chip set provides excellent performance in the system. 4、Easy to operate, anti-aging and long service life, you can use with confidence. 5、The product adopts high-quality materials, sturdy and durable to use. Specification Features: 1. Precise cut and interface ensure perfect applicability, suitable for installation location and easy to install. 2. The product adopts high-quality materials, effectively avoiding corrosion and wear, durable to use. 3. Professional chip set provides excellent performance in the system. 4. Easy to operate, anti-aging and long service life, you can use with confidence. 5. The product adopts high-quality materials, sturdy and durable to use. Specification: Item Type: Protection Board Product Model: HW-293 Charging Voltage: DC 16.8-17.8V Continuous Discharge Current: Up to 40A (if the environment is not good for heat dissipation, please reduce the use of load current) Continuous Charging Current: Maximum 20A Application: Suitable for lithium battery with nominal voltage of 3.7V and full charge of 4.2V, and electric drill below 170W Product Size: Approx. 6x4.5x0.2cm/2.4x1.8x0.1in Package List: 1 x Protection Board Package List