battery :
BAT0203 is a rechargeable, high-performance lithium-ion battery. It has a capacity of 18500mAh and an output voltage of 3.7V. The BAT0203 is also compatible with a wide range of applications, including mobile phone, digital camera, and other digital products. It features a built-in management system that helps monitor and regulate the charging and discharging cycle for optimal battery performance, a quick charge capability, and a long lasting design for long-term, reliable use.