The 18650 electric core and lithium polymer electric core are different in raw materials. The 18650 electric core is made of lithium iron phosphate, lithium manganate and ternary lithium, while the lithium polymer electric core is generally made of lithium cobalate, lithium manganate, ternary lithium and other materials. The former has single raw materials, while the latter has rich raw materials.

The safety of the two is also very different. The 18650 electric core is likely to explode when its production quality is not up to standard due to its steel shell packaging. However, the beginners who want to assemble may not be able to tell whether the 18650 cell they have traded is of good quality. As for novices, the 18650 cell is not recommended because it is difficult to get started.

The safety of the lithium polymer core is higher than that of the 18650 core, because the packaging structure of the lithium polymer core is a layer of aluminum plastic film and a layer of high temperature adhesive tape. The more serious accident phenomenon is combustion rather than direct explosion.

The energy density of lithium polymer electric core is also higher than that of liquid 18650. Since the safety of the lithium-ion battery pack is slightly worse than that of the lead-acid battery, various safety precautions should be taken in use, such as preventing damage to the lithium-ion battery by external forces or accidents, which may cause fire or explosion; At present, the temperature applicability of lithium ion battery is also very good, so in other aspects of adaptability, lithium ion battery is no less than lead-acid battery.