Which is better, 18650 battery or polymer battery?

Which is better, 18650 battery or polymer battery?

The capacity of a typical 18650 rechargeable battery can reach around 2200mAh, and the calculated specific energy is about 500Wh/L. Currently, the specific energy production of polymer lithium batteries can approach 600Wh/L.

Which one is more durable, polymer or 18650? In terms of style, 18650 lithium batteries are classified as cylindrical, while polymer lithium batteries are classified as irregular or square. Polymer lithium batteries are packaged with aluminum-plastic film on the outside, which is relatively sensitive and easy to scratch, groove, and break. If the polymer lithium battery is accidentally dropped to the ground, the positive ear of the rechargeable battery is prone to breakage. The 18650 cylindrical rechargeable battery case is made of metal material, so even if it is dropped twice, there will be no problem.

If the same ternary material is used for both polymer and 18650 rechargeable batteries, the storage requirements for polymer and 18650 rechargeable batteries, the charging requirements for polymer and 18650 rechargeable batteries, the application requirements for 18650 and polymer lithium batteries, and the requirements for 18650 and polymer cycling systems are all the same. Under similar working voltage specifications, construction standards, and office environments, in fact, the vast majority of people cannot determine which is more durable between 18650 and polymer lithium batteries.