Since the working principle of the lithium ion battery is that the internal electrolyte changes through the chemical reaction, a potential difference occurs between the positive and negative electrodes to generate a current. In a low temperature environment, the electrolyte moves relatively slowly, thereby affecting the transfer activity of lithium ions between the positive and negative electrodes, resulting in a decrease in battery charge and discharge performance.
Simply put, in a low temperature environment, it is not that the lithium battery is really dead, but it has electricity but cannot be released normally. According to analysis data, the average lithium battery will have a 20% reduction in capacity at zero degrees Celsius. When it reaches minus 10 degrees Celsius, the capacity may be only about half.