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When trying to characterize the behavior of lithium-ion cells, engineers and scientists know the temperature of the cell matters. Most notably, there’s a common understanding that cell reactions double for every 10°C, which is the Arrhenius equation.

For example, cell self-discharge is thought to double each time the cell temperature increases by 10°C. Given that temperature has such a significant impact, testing is done specifically under temperature control in environmental chambers. These chambers come in various internal volumes to accommodate cell samples from small sizes that can accommodate just a few cells to enormous walk-in chambers.