How to distinguish between ternary lithium and lithium iron phosphate for 18650 batteries?
18650 is just a packaging standard for batteries. Here, 18 refers to the diameter of the battery being 18 millimeters and the height of the battery being 650 millimeters. Any type of battery can be manufactured in this shape.
Both ternary lithium batteries and lithium iron phosphate can be manufactured in this shape, and 18650 batteries on the market have both ternary lithium batteries and lithium iron phosphate batteries, which cannot be distinguished by their shape. The simplest and quickest method of identification is to measure the voltage of the battery. After being fully charged, the normal voltage of a ternary lithium battery is above 3.6V after being left to stand for half an hour, and the normal voltage of a lithium iron phosphate battery is above 3.2V, which can be easily distinguished.
The 18650 battery was one of Tesla's earliest applications in electric vehicles, initially produced by Panasonic. Panasonic was one of the early companies to develop ternary lithium batteries, and the 18650 is one of their products. Currently, most battery companies are conducting research and development on ternary lithium batteries, as the performance development of lithium iron phosphate batteries is approaching the ceiling, and ternary lithium batteries still have enormous potential for development.
18650 is just a packaging standard for batteries, which means a diameter of 18 millimeters, a height of 65 millimeters, and 0 is cylindrical. And batteries packaged according to this standard can be one of the types of ternary lithium, lithium cobalt oxide, lithium manganese oxide, or lithium iron phosphate batteries.
18650 is a cylindrical lithium battery model, which can be a ternary lithium battery or a lithium iron phosphate battery, but with different capacities and voltages.
