What is the operating temperature range of li polymer battery? How does low or high temperature affect their performance?

As a widely used portable energy storage device, li polymer battery have an operating temperature range of approximately 0°C to 45°C, providing stable voltage and capacity output within this range. When the ambient temperature is below 0°C, the performance of lithium polymer batteries will drop significantly: low temperatures will slow down the ion migration speed inside the battery, resulting in reduced available capacity, increased internal resistance and reduced power output. In severe cases, they may not be able to charge or discharge normally, which may cause the battery voltage to drop or fail prematurely.

Under high temperature conditions, such as exceeding 45°C, the electrochemical reaction of lithium polymer batteries will accelerate, which may bring higher power output in the short term, but long-term exposure will cause electrolyte decomposition and electrode material degradation, which will not only shorten the battery life, but also increase the risk of thermal runaway, such as fire or explosion.

Therefore, when operating li polymer battery, users must avoid extreme temperature environments to maintain the safety and longevity of the batteries. In general, although the temperature adaptability of li polymer battery is better than that of some traditional batteries, it is key to strictly control it within the recommended range to maximize its cycle life and reliability.