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Application Notes
Why is Temperature Profiling Important?
Charge and discharge currents increase the temperature of the batteries, and temperature directly affects the lifespan and storage capacity of batteries. Batteries tend to be efficient and provide a normal life span at room temperatures. When batteries are subjected to cold temperatures, their capacity is greatly reduced, and as temperatures increase above room temperature, their life span is reduced. At extreme temperatures, batteries can break down in several stages: leakage, smoke, fire, and explosion. Manufacturers often perform abuse tests to determine the temperatures for each of the stages of breakdown. The increased adoption of consumer mobile devices has made heat measurement relevant, particularly when batteries charge and discharge. The rule of thumb for electronic devices is that for every 10 °C rises in temperature, the average reliability of an electronic device decreases by 50%. Or, if we can lower the temperature by 10 °C, we’ll double the reliability and improve the expected mean time between failure ratings (MTBF) by two times.
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