What is the difference between 18650 batteries and soft-pack lithium batteries?

    From the outside, the intuitive difference between the 18650 lithium battery and the soft-pack lithium battery is that the 18650 lithium battery is a cylindrical steel-shell battery, and its size is basically the same. The soft-pack lithium battery may have any shape and size, and the shell is a battery packed with aluminum-plastic film. From an internal perspective, the difference between 18650 lithium batteries and soft-pack lithium batteries is different in terms of data such as electrolyte, conductive agent, electrical formula ratio, etc., and the production process is also different. The 18650 lithium batteries are individually steel shell packages (18 means 18 mm in diameter, 65 means 65 mm in length, and 0 means cylindrical battery), and the structure of the internal electric sheet and the barrier is a winding type. The outer packaging of lithium polymer soft-pack batteries uses aluminum-plastic film, and the internal electrical sheet and barrier are stacked (one layer after layer). Another difference between 18650 lithium batteries and soft-pack lithium batteries is the difference in the internal data of the electrolytes: the electrolytes inside the lithium polymer soft-pack battery are polymers, some of which are gel or solid, while the electrolytes inside the 18650 lithium batteries are liquid. The third difference is in the lithium battery's maximum current discharge capacity. The soft-pack lithium battery may achieve a higher magnification than the 18650 lithium battery, and at the same time, the soft-pack lithium battery has a better function. In terms of equivalent discharge, the soft-pack lithium battery may customize the corresponding external battery according to the space condition of the product battery compartment to achieve a lighter situation.

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