Which is better, 18650 lithium battery or polymer lithium.

Which is better, 18650 lithium battery or polymer lithium.

Only through comprehensive analysis of polymer lithium batteries and 18650 lithium batteries can we truly grasp which one is better, 18650 or polymer lithium batteries. The relevant details here are actually tested in the safety laboratory of lithium battery manufacturers with data. Today, Battsys Battery will compare the relative performance of 18650 lithium-ion batteries and polymer lithium batteries.

1. The price is relatively low.

At present, the price of 18650 lithium-ion batteries in various countries around the world is about 1USD/pcs, and according to 2Ah calculations, it is about 3RMB/Ah. Compared with the price of polymer lithium batteries, counterfeit factories in the mid to low end range are priced at 4 RMB/Ah, mid-range range ranges from 5 to 7 RMB/Ah, and mid to high end range is above 7 RMB/Ah. Like ATL and Lishen, they can usually sell for around 10 RMB/Ah, and if your order becomes smaller, others are unwilling to accept it.

2. The specifications, models, and specifications of rechargeable batteries have already been determined

SONY has always hoped to make lithium batteries into dry batteries with certain national standards, such as the No. 5 battery and No. 7 battery, which are the same in most countries around the world. But because one of the major advantages of lithium batteries is the ability to plan the overall appearance design according to customer requirements, there cannot be a unified standard. Therefore, most of the lithium battery industry chain is based on the 18650 standard type, and everything else is planned according to customer requirements.

3. Polymer lithium batteries are safer, while 18650 lithium batteries are risky.

We know that in peak conditions (such as charging, overheating, etc.), lithium batteries will undergo strong chemical changes inside, causing a lot of vapor. Rechargeable batteries use plastic shells with certain compressive strength. When the internal standard air pressure reaches a certain value, the aluminum shell will crack and explode, causing extremely terrible safety production accidents. For this reason, rooms that test 18650 rechargeable batteries are generally required to undergo hierarchical maintenance, and no one is allowed to enter during the testing process. This problem does not exist, even at the vertex. Due to the low compressive strength of the packaging film, if the standard air pressure is slightly higher, it will crack and not easily explode. The worst case scenario is ignition. Therefore, in terms of safety, polymer lithium batteries are better than 18650 rechargeable batteries.