3.7V lithium-ion batteries feature a stable nominal voltage of 3.7V, high energy density, low self-discharge rate, and long cycle life. They can be adapted to a variety of low-power to medium-low-power devices, with stable electrical characteristics and good environmental adaptability.
The 18650 lithium battery, as a typical representative of 3.7V lithium-ion batteries, in addition to having the above-mentioned common features, also has a cylindrical shape. Its standardized size facilitates unified design and installation. The capacity is usually between 1200 and 4000 mAh, and it has a relatively strong power output capacity. It performs excellently in devices such as high-intensity flashlights and laptop battery packs. Its mature production process and extensive market applications result in relatively good cost control and supply stability.