There is currently no clear theory to support the internal resistance, discharge platform, lifespan, and capacity of lithium-ion batteries at different temperatures regarding lithium-ion batteries. The relevant calculation formulas and mathematical models are still in the exploratory stage. Generally speaking, lithium-ion batteries are not sensitive to 0-40 degrees Celsius temperatures. However, once the temperature exceeds this range, the life and capacity of lithium-ion batteries will be reduced.

There is no way to quantify lithium-ion batteries specifically because lithium-ion batteries are too active, and consistency is the biggest problem. Even the same batch of products, the same material, and the process will have very different properties.

Many experiments have been done, and the low-temperature performance of lithium-ion batteries of different materials is also another. Currently, the hottest lithium iron phosphate is the worst at low temperatures. At -10°C, the release capacity of our product is 89% of the maximum capacity. It should be relatively high in the industry, the output capacity at 55°C can reach 95%, and the attenuation at lower temperatures is still relatively small. This is still a product to be inspected. We all know that the quality of a standard production line is much higher than that of an ordinary production line.

Lithium-ion batteries of different materials have different low-temperature resistance properties. For example, the low-temperature resistance of the ternary battery is slightly better, and the low-temperature resistance of the lithium iron phosphate battery is relatively poor. Car consumers can also feel that lithium-ion batteries last less in winter than in summer. The feeling is more apparent, especially in the northern part of our country. For example, when the lithium iron phosphate battery is at minus ten degrees, the released capacity is 89% of the maximum capacity.

The working principle of the lithium-ion battery is that the internal electrolyte changes through a chemical reaction and a potential difference occurs between the positive and negative electrodes to generate current. The electrolyte moves relatively slowly in a low-temperature environment, which affects the transfer activity of lithium ions between the positive and negative electrodes, resulting in a decrease in the battery's charge-discharge performance.