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Methods for Maintaining Lithium-ion Batteries

Views: 316     Author: Site Editor     Publish Time: 2023-04-10      Origin: Site

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Methods for Maintaining Lithium-ion Batteries

Lithium-ion batteries are becoming increasingly popular in modern production and daily life due to their high capacity and lack of memory effect. Almost every product, such as mobile phones and computers, is equipped with a lithium-ion battery. If you have a spare lithium-ion battery for your phone, how can you store it to ensure that its energy does not diminish?

1. Primary Lithium Batteries

Also known as disposable lithium batteries, they can be continuously or intermittently discharged. Once the electricity is depleted, they cannot be used again. They are widely used in low-power electronic products such as cameras.

Primary lithium batteries have very low self-discharge rates and can be stored for up to three years. Storing them in a cool place will yield better results. Please note: primary lithium batteries are different from lithium-ion batteries and cannot be charged. Charging them is extremely dangerous!

2.Lithium-ion batteries

Lithium-ion batteries, also known as secondary lithium batteries, can be stored for more than six months at temperatures of 20℃ or below due to their low self-discharge rate. Moreover, most of their capacity can be restored.

However, the self-discharge phenomenon of lithium batteries can cause over-discharge and damage to the internal structure of the battery if the battery voltage is stored for a long time below 3.6V, thereby reducing the battery life. Therefore, lithium batteries that are stored for a long time should be recharged every 3-6 months to a voltage of 3.8-3.9V (the optimal storage voltage for lithium batteries is around 3.85V) and maintained at a discharge depth of 40%-60%. They should not be fully charged and should be stored in a dry environment at temperatures between 4℃ and 35℃ or in moisture-proof packaging. They should be kept away from heat sources and not placed in direct sunlight.

Lithium batteries have a wide range of operating temperature, even in outdoor winter conditions in the north, they can still be used but with significantly reduced capacity. However, when returned to room temperature conditions, their capacity can be restored.

Of course, when you first buy a lithium battery, it only has a small amount of charge because the storage performance of lithium batteries is an important parameter that measures the stability of their overall performance. Lithium battery manufacturers will store newly produced lithium batteries for a certain period before allowing them to be sold to ensure that the electrochemical properties of each component inside the battery stabilize and guarantee its quality. Therefore, it is necessary to charge them before use.

Methods for Maintaining Lithium-ion Batteries

We have a number of lithium battery PACK production lines, aging, capacity division and other production equipment and a large number of experienced industrial workers.

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