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Which is Better ? Polymer Lithium Battery or 18650 Lithium Battery?
2023-07-13
Which is Better ? Polymer Lithium Battery or 18650 Lithium Battery?
Polymer lithium batteries (also known as lithium polymer batteries) and 18650 lithium batteries are common types of lithium-ion batteries used for storing and releasing electrical energy.
Polymer lithium battery uses polymer as electrolyte material, and the electrolyte is fixed between two electrodes (usually positive electrode and negative electrode) in the form of gel or film. The characteristic of polymer lithium batteries is that they can be customized in shape, thin and lightweight, and can meet some special design needs. They typically have a higher energy density and can provide longer battery life.
Characteristics of polymer lithium batteries:
1. Thin and lightweight, customizable in shape, suitable for special design needs such as curved and ultra-thin devices.
2. It has a high energy density and can provide longer battery life.
3. Relatively high safety performance and low self discharge rate.
The 18650 lithium battery is a cylindrical lithium-ion battery with dimensions of approximately 18 millimeters in diameter and 65 millimeters in length. The name is also derived from its size (18- represents diameter, 650- represents length). 18650 lithium batteries have high power output and capacity, making them widely used in various portable electronic devices, such as laptops, portable power supplies, and power tools. They have a relatively mature market and supply chain, and are widely used in the field of electronic products.
1. Strong universality, widely used in portable electronic products, such as laptops, portable power supplies, etc.
2. It has a high discharge current capacity and is suitable for equipment with high power requirements.
1. The polymer lithium battery uses gel electrolyte, while the 18650 lithium battery uses liquid electrolyte. Therefore, compared with the 18650 lithium battery, the polymer lithium battery will not leak.
2. The safety performance of polymer lithium batteries is higher than that of 18650 lithium batteries, and there will be no combustion or explosion.
3. The energy density of polymer lithium batteries is as high as 600Wh/L, which is higher than that of 18650 lithium batteries.
4. Polymer lithium batteries have small size and large capacity.
Through the above comparison, we can conclude that polymer lithium batteries have better advantages, but they also have their own disadvantages, mainly due to their high cost and poor universality.
Therefore, the selection of which battery type should be evaluated based on specific application needs and limitations. If you pursue ultra-thin, lightweight design and high energy density, polymer lithium batteries may be more suitable. If you need a higher power output or if your existing device is compatible with 18650 lithium batteries, choosing 18650 lithium batteries may be more suitable.
Polymer lithium batteries (also known as lithium polymer batteries) and 18650 lithium batteries are common types of lithium-ion batteries used for storing and releasing electrical energy.
Polymer lithium battery uses polymer as electrolyte material, and the electrolyte is fixed between two electrodes (usually positive electrode and negative electrode) in the form of gel or film. The characteristic of polymer lithium batteries is that they can be customized in shape, thin and lightweight, and can meet some special design needs. They typically have a higher energy density and can provide longer battery life.
Characteristics of polymer lithium batteries:
1. Thin and lightweight, customizable in shape, suitable for special design needs such as curved and ultra-thin devices.
2. It has a high energy density and can provide longer battery life.
3. Relatively high safety performance and low self discharge rate.
The 18650 lithium battery is a cylindrical lithium-ion battery with dimensions of approximately 18 millimeters in diameter and 65 millimeters in length. The name is also derived from its size (18- represents diameter, 650- represents length). 18650 lithium batteries have high power output and capacity, making them widely used in various portable electronic devices, such as laptops, portable power supplies, and power tools. They have a relatively mature market and supply chain, and are widely used in the field of electronic products.
1. Strong universality, widely used in portable electronic products, such as laptops, portable power supplies, etc.
2. It has a high discharge current capacity and is suitable for equipment with high power requirements.
3. At present, there is a mature industrial chain in the market, with stable supply and relatively low prices.
1. The polymer lithium battery uses gel electrolyte, while the 18650 lithium battery uses liquid electrolyte. Therefore, compared with the 18650 lithium battery, the polymer lithium battery will not leak.
2. The safety performance of polymer lithium batteries is higher than that of 18650 lithium batteries, and there will be no combustion or explosion.
3. The energy density of polymer lithium batteries is as high as 600Wh/L, which is higher than that of 18650 lithium batteries.
4. Polymer lithium batteries have small size and large capacity.
Through the above comparison, we can conclude that polymer lithium batteries have better advantages, but they also have their own disadvantages, mainly due to their high cost and poor universality.
Therefore, the selection of which battery type should be evaluated based on specific application needs and limitations. If you pursue ultra-thin, lightweight design and high energy density, polymer lithium batteries may be more suitable. If you need a higher power output or if your existing device is compatible with 18650 lithium batteries, choosing 18650 lithium batteries may be more suitable.
