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If a polymer fast charging battery is arbitrarily charged, it means that lithium quickly releases and swims towards the negative electrode. At this time, the negative electrode material needs to have the ability to quickly insert lithium ions. Due to the similar potential of lithium ions and lithium ion precipitation, under fast charging or low temperature conditions, lithium may precipitate on the surface to form dendritic lithium ions, which can penetrate the separator and cause Li secondary loss, reducing the capacity of polymer high-power batteries, When the lithium Ionic crystal reaches a certain amount, it will grow from the negative electrode to the diaphragm, causing the risk of short circuit of the battery.

3. Will frequent fast charging shorten the lifespan of polymer high-power batteries?

Frequent charging of polymer high-power batteries can also accelerate the lifespan of the battery, leading to issues such as reduced battery activity and shortened battery life. Especially with the addition of fast charging technology, although the charging speed was very fast in the early stage, it was not fully charged to 100% before unplugging, resulting in multiple charges and increasing the number of cycles for polymer high-power batteries. Long term use of this method will reduce the battery's activity, thereby accelerating battery aging.

4. High temperature is the biggest killer of aging in polymer high-power batteries. The high power of fast charging can cause the battery to heat up in a short period of time. Although non fast charging has low power and low heat generation per unit time, it requires longer power on time. In this way, the heat of polymer high-power batteries will also accumulate and increase over time, and the difference in heat generated during the charging process is not enough to cause a difference in the aging rate of the battery.

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