What is the upper limit capacity of 18650 lithium battery pack?
The capacity of 18650 lithium battery pack is a concern for many industrial users and individual consumers, because the larger the capacity of 18650 lithium battery, the longer the usage time, which can provide users with longer power supply. The capacity of 18650 lithium battery pack is the most important performance parameter of this type of battery, and it is also the fundamental element that determines the price of the battery. Manufacturers can design 18650 lithium batteries with different capacities, which are determined by the raw materials and processes.
The common 18650 batteries are divided into lithium-ion batteries and lithium iron phosphate batteries. The voltage of lithium-ion batteries is 3.6V and 4.2V, and the voltage of lithium iron phosphate batteries is 3.2V. The capacity is usually 1200mAh-3000mAh, with common capacities ranging from 2200mAh to 3600mAh.
Due to the fixed size of the 18650 lithium battery pack, its maximum capacity has always been a concern for many practitioners. In recent years, various manufacturers have improved their technology and correspondingly increased their capacity. Samsung, Panasonic LG、 Sony and Toshiba can both achieve a capacity of 3600mAh or higher, but the most consistent stability is still in the capacity range of 2600~3000mAh. If it is a lithium battery pack, it is best not to use the highest capacity. Both cost-effectiveness and the service life of the battery pack after grouping are not very cost-effective, so it does not mean that the higher the battery capacity, the more stable and long-lasting the use.
Most application fields have different current and time requirements, so most power supply batteries are presented as lithium battery packs. When choosing a battery pack, the consistency, stability, and safety of the battery cells should be considered, which are all very important indicators. It is worth noting that many buyers have a misconception that a high capacity will result in a large actual discharge current, but this is exactly the opposite: 18650 lithium battery packs are generally divided into capacity type and rate type. Capacity type mainly reflects high capacity, but the discharge current is generally lower than 1C and the current is relatively small; The rate type can discharge high current, but has a lower capacity and a shorter usage time. This is similar to the trade-off between fish and bear's paw.
