Voltage of single cell: 3.7V Nominal voltage after battery pack combination: 14.8V Capacity of single battery: 1.3ah Battery combination mode: 4 strings and 1 parallel Voltage range of battery after combination:12v-16.8v Battery capacity after combination: 1.3ah Battery pack power: 19.24w Battery pack size: 39*39*69mm Maximum discharge current: < 1.3A Instantaneous discharge current: 2.6A-3.9a Maximum charging current: 0.2-0.5c Charging and discharging times: ＞ 500 times14.8V cylindrical lithium battery Meet the relevant national standards and requirements for batteries All finished battery products are calibrated and tested before delivery. They can be used directly and normally. The 18650 is a very widely used battery. The 18650 battery life theory is 1000 cycles of charging. Because of the large capacity per unit density, most of them are used in laptop batteries. In addition, because the 18650 has a very good stability at work, it is widely used in various electronic fields: often used in high-end glare flashlights and portable Power supply, wireless data transmitter, etc. Polymer batteries are mainly used in mobile phones and mobile DVDs. Advantages: The capacity is generally between 1200mah~3600mah, and the general battery capacity is only about 800mah. If combined into an 18650 lithium battery pack, the 18650 lithium battery pack can easily exceed 5000mah. Disadvantages: The biggest disadvantage of the 18650 lithium battery is that its size has been fixed, and it is not well positioned when installed in some notebooks or some products.